• 59.32521118.070751 Nobel Museum, Nobelmuseet Stortorget 2, Stockholm/Gamla Stan, Sweden, ☏ +46 8 534 818 00, booking@nobelmuseum.se. It has exhibitions about the Nobel Prize.  
• Sweden Solar System in greater Stockholm, contains the world's largest scale model of the Solar System.
• Stockholm environmentalist tour features the capital of Sweden as a forerunner in environmentalist opinion and sustainable technology.
• 60.29027825.0452 Heureka, Kuninkaalantie 7 (Near Tikkurila railway station). M-W Th 10:00-20:00, F 10:00-5PM, Sa Su 10:00-18:00. Heureka in Vantaa is an interactive science museum, with different kinds of exhibitions about technology, physics, chemistry, medicine, astronomy and so on. Really exciting for children interested in science. Adult €19; children (6-15) €12.50.  

• 54.13777813.7688893 Peenemünde (Historisch-Technisches Museum Peenemünde), Im Kraftwerk, Peenemünde, ☏ +49 38371-505-0, htm@peenemuende.de. Apr-Sep: 10:00-18:00, Oct-Mar: 10:00-16:00, open daily (Nov-Mar: Mon closed). A place where the Germans developed some of the world's first rockets before and during World War II. Regular €8, discount €5.  
• 52.25138921.0086114 Marie Curie Museum, ul. Freta 16, 00-227 Warszawa, Poland, ☏ +48 22 831 80 92, muzeum.msc@neostrada.pl. History of radioactivity.  
• 49.23868.897225 Auto & Technik Museum (Signposted from exits 33 or 34 on the A6 Autobahn.). open daily. In Sinsheim, Baden-Württemberg (southwestern Germany). Has interesting displays of many vintage and historic cars, motorcycles, other machinery, and an extensive collection of aircraft, including a Soviet Tupolev Tu-144 and an Anglo-French Concorde.  

• 48.1311.5833336 Deutsches Museum (German Museum of Masterpieces of Science and Technology), Museumsinsel 1 (S-bahn station Isartor, then follow signs, alternatively U-bahn Fraunhoferstraße Tram 16: Deutsches Museum), ☏ +49 89 21791, fax: +49 89 2179324, information@deutsches-museum.de. Daily 09:00-17:00. Probably the closest anybody is ever going to get to a "museum of everything" or at least a museum of "everything technology" and a whole lot more. One of the greatest scientific and technical museums in the world, it is one of the most important sights in the area and absolute "must see's" of Munich, visited by roughly 1.5 million visitors per year. Topics range from aviation to brewing, from computer sciences to bridge building. There are many guided tours on specific themes and in different languages. There is a planetarium and two branch offices in other locations, which show vehicles that found no place in downtown Munich. Adults €14.00, concessions €4.50.  

• 52.4290310.790457 Phaeno Science Centre, Willy Brandt Platz 1 (just south of the railway line and the canal opposite Autostadt). Tu-F 09:00-17:00, Sa Su 10:00-18:00, open on some Mondays and most holidays. What to do in a city built for and by a car company when you couldn't care less about cars? Well in that case a visit to this "Science Center" is an absolute must. Housed in a relatively new building designed by Zaha Hadid with quite bold architecture (though your mileage may vary on the "naked concrete"). While the architecture was a bit controversial with locals at the time of its construction, the museum - focused on science and the likes - is a good place to take the kids to but also a fun place for adults to "toy around" with their inner child, observing and exploring phenomena as diverse as fire tornadoes, brain waves or vacuum. Adult €12.50, child €8, reduced €9.50, half the price 90 min before closure. 
• The city of Friedrichshafen offers a museum dedicated to zeppelins and another to Dornier aircraft.

• 51.4975-0.1747228 Science Museum, South Kensington, London, ☏ +44 870 870 4868.  
• 51.3313890.0533339 The Down House, Luxted Road, Downe, Kent, BR6 7JT, England, ☏ +44 1689 859119. Opening hours vary according to season, on open days 10:00-16:00. This place has a unique part in the history of science as the theory of evolution by natural selection got worked out here. A visit of the home of the English naturalist Charles Darwin allows glimpses of his life. Darwin wrote 'On the Origin of Species' in this house. The house also has carnivorous plants and exotic orchids. adults £10.00, children £6.00, concessions £9.00.  
• 55.955251-3.20571710 James Clerk Maxwell's Birthplace and Museum, 14 India Street, Edinburgh, EH3 6EZ, UK. The house in which James Clerk Maxwell was born is open to visitors by appointment. Visits for up to twelve people are conducted by volunteers and take approximately 1 hour; there are four steps up to the main door. Edinburgh's answer to Newton and Einstein. His equations unified the forces of electricity and magnetism and paved the way for Einstein's theory of special relativity. From the website "Modern technology, in large part, stems from his grasp of the basic principles of the universe. Wide ranging developments in the field of electricity and electronics, including radio, television, radar and communications, derive from Maxwell's discovery of the laws of the electromagnetic field - which was not a synthesis of what was known before, but rather a fundamental change in concept that departed from Newton's view and was to influence greatly the modern scientific and industrial revolution." Free, donations welcome. (updated Oct 2016)

• 45.463029.17123711 Leonardo da Vinci Museum of Science and Technology (Museo Nazionale della Scienza e della Tecnologia), S.Vittore Street, Milan, Italy (reachable by bus or subway, line MM2 Sant'Ambrogio Station), amministrazione@museoscienza.it. Hosted in a former monastery, San Vittore al Corpo.  

• 46.49986111.34952812 South Tyrol Museum of Archaeology.  

• 43.76764511.25596613 Galileo Museum (Museo Galileo), Piazza dei Giudici 1, Florence, Italy. 

• In the outskirts of Moscow there are a couple of sites dedicated to the Soviet and Russian contributions to science and technology. These include the Memorial Museum of Astronautics, the All-Russia Exhibition Centre and the Monument to the Conquerors of Space. While you're there, check out the 540-m-high concrete transmission tower, Ostankino Tower.
• 54.8583.103614 Akademgorodok. Out in the Siberian taiga near Novosibirsk, Akademgorodok (literally "academy town") was built during the Soviet era, so that the academic elite could conduct their research in relative freedom, prosperity, and isolation. The planned city with tree lined streets hosts several museums, institutes, as well as a beach on the Ob Sea, an artificial reservoir. 

In the United States of America overseen by the United States Department of Energy (DOE) the Office of science operates ten national laboratories. In total there are 17 national laboratories funded by the DOE. Most of the sites hold open houses where the public can come in for free and see how American tax dollars are invested in research. This used to include nuclear facilities, but those have been restricted since 9/11.

• 42.0305-93.648255 Ames Laboratory (Ames Lab), Iowa, USA (Iowa State University campus), ☏ +1 515 294-9750, breehan@ameslab.gov. Ames Laboratory conducts research into various areas, including the synthesis and study of new materials, energy resources, high-speed computer design, and environmental cleanup and restoration. The Ames Project purpose was to produce high purity uranium to accompany the Manhattan Project. Its most notable faculty member Dan Shechtman won the 2011 Chemistry Nobel prize. Contact the Lab in advance of your visit. Group tours can be arranged through the public affairs office.  

• 41.709166-87.98199256 Argonne National Laboratory (Argonne), 9700 S. Cass Avenue Argonne, Illinois, USA (Metra train to the Westmont Metra station + PACE bus #715), ☏ +1 630 252-5562, tours@anl.gov. Argonne National Laboratory was founded in 1946 to carry out Enrico Fermi's work on nuclear reactors as part of the Manhattan Project. Today Argonne is a multidisciplinary science and engineering research center, to address vital national challenges in clean energy, environment, technology and national security. Argonne welcomes all members of the public age 16 or older to take guided tours of the scientific and engineering facilities and grounds. Tours last about two and a half hours and are by reservation only (call or email).  

• 40.873346-72.87205757 Brookhaven National Laboratory (Brookhaven Lab), William Floyd Parkway, County Road 46, Long Island, New York, USA (Ronkokoma station from the Long Island Rail Road (LIR) + Taxi). Brookhaven National Laboratory is a multipurpose research institution funded primarily by the U.S. Department of Energy’s Office of Science. Brookhaven Lab operates large-scale facilities for studies in physics, chemistry, biology, medicine and applied science. It is the home of the Relativistic Heavy Ion Collider, which first observed/created the Quark-Gluon-Plasma. Brookhaven scientists won 7 Nobel prizes including the Ribosome discovery (2009). The lab is open to the public on Sundays during the summer for tours and special programs.  

• 41.831944-88.25722258 Fermi National Accelerator Laboratory (Fermilab), Kirk Road and Pine Street in Batavia, Illinois, USA, ☏ +1 630 840-8258, fermilab@fnal.gov. Apr-Oct: 8AM-8PM, Nov-Mar: 8AM-6PM. Fermilab is a US Department of Energy national laboratory specializing in high-energy particle physics. Hence many components of the Large Hadron Collider got engineered and tested here. The Top quark was discovered in 1995 by both the CDF and DØ experiments of the Tevatron accelerator at Fermilab. The 2008 Nobel prize was given for the prediction of the third generation of quarks (Bottom and Top quarks). Fermilab visitors are allowed to visit two buildings on their own: the first and ground floor of Wilson Hall and the Lederman Science Center, Groups of six or more must book a visit by calling the Center.  

• 37.877004-122.2465559 Lawrence Berkeley National Laboratory (Berkeley Lab), San Francisco, California, USA (Lab bus from the Berkeley downtown BART station, otherwise 15-min walk uphill). Lawrence Berkeley National Laboratory (LBNL) was founded in 1931 by Ernest Orlando Lawrence. 13 Nobel prizes have been awarded to LBNL scientists, the most recent one (2011) for the discovery of the accelerated expansion of the Universe. It started as a particle physics laboratory, became involved for the study of nuclear matter and discovered 16 chemical elements. It is today a multi-program research site. Visitors need special clearance or may take advantage of the open days. The site on top of the hill nicely overlooks the San Francisco Bay. 

• 35.933333-84.31666760 Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee, USA (7 miles from the center of the city of Oak Ridge), ☏ +1 865 574-7199, ORNLvisit@ornl.gov. The Oak Ridge National Laboratory (ORNL) is a multiprogram science and energy laboratory, with scientific and technical capabilities spanning from basic to applied research. ORNL is famous to host the Titan supercomputer. The Spallation Neutron Source is an accelerator-based neutron source facility that provides the most intense pulsed neutron beams in the world for scientific research and industrial development. Oak Ridge National Laboratory hosts thousands of visitors every year. It is very important, if you are not a DOE or DOE contractor employee, to arrange your visit to ORNL ahead of time.  

• 46.343224-119.27633361 Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, Washington, USA. The Pacific Northwest National Laboratory has many research projects for the U.S. Department of Homeland Security and the National Nuclear Security Administration. All PNNL visitors, regardless of nationality, will need to have visitor badges to go past the Lobby.  

• 40.348825-74.60218362 Princeton Plasma Physics Laboratory (PPPL), 100 Stellarator Road Princeton, New Jersey, USA (NJ Transit Northeast Corridor line train (southbound) to Trenton Station; switch to the SEPTA R7 train to Philadelphia; from the West Trenton Station (I-95 south, exit 2, Bear Tavern Road south) take the SEPTA R3 train to Philadelphia), ☏ +1 609 243-2000, jjackson@pppl.gov. M-F 09:00-14:00. Princeton Plasma Physics Laboratory researches plasma physics and nuclear fusion science. PPPL is located on Princeton University's Forrestal Campus. The free tours are led by engineers and physicists who can answer questions about magnetic fusion. In order to visit email to request a tour and give PPPL two weekdays when you would like to visit and some background on your group, including where your group is from, how many people are in your group, the age-range and the educational background of your group.  

• 37.414722-122.22166763 SLAC National Accelerator Laboratory (Stanford Linear Accelerator Center, SLAC), Sand Hill Road, Stanford, USA. The SLAC National Accelerator Laboratory does experimental and theoretical research in elementary particle physics using electron beams and a broad program of research in atomic and solid-state physics, chemistry, biology, and medicine using synchrotron radiation. It discovered the charm quark, the quark structure inside the protons and neutrons and the tau lepton (3 Nobel prizes). Tours are open to all visitors 12 years of age and above, with children 12 to 17 years of age must be accompanied by an adult.  

• 37.0947-76.481764 Thomas Jefferson National Accelerator Facility (Jefferson Lab), Newport News, Virginia, USA, openhouse2014@jlab.org. Open house one day in May 9AM-3PM. The Jefferson Lab main facility is the Continuous Electron Beam Accelerator Facility, which is 1400 m in length and accelerates electrons up to 6 GeV. The most powerful free-electron laser in the world has an output of over 14 kilowatts. The lab has an open house once a year that includes a tour of the accelerator tunnel and the free electron laser. No registration of visitors is required during the open house. The open house tours involve extended periods of walking, and many tour stops include stairs. Also, much of the event is outdoors. Free.  

• 40.736611-74.00972265 Bell Labs building (Manhattan). For much of the early 20th century, this building was home to Bell Telephone Laboratories and was the largest industrial research facility in the US. A long list of inventions such as talking movies, TV (black/white and color), radar, the vacuum tube, and the transistor came from this lab. The High Line railroad actually went through the building in a tunnel, although the more recent High Line linear park does not reach this far south. After Bell Labs moved out in 1966, the building was remodeled as the Westbeth Artists’ Housing complex.  
• 32.578778-110.85059466 Biosphere 2, 32540 A Biosphere Rd, Mile marker 96.5, Oracle, Arizona, USA (30 min north of Tucson on Hwy 77), ☏ +1 520-838-6139, dunlapc@email.arizona.edu. 9AM-4PM daily, no reservations required. This facility was designed as an artificially closed complete ecology, and was the setting for research on human interaction with natural systems. The site is now owned and maintained by the University of Arizona, which conducts tours for the public. The scientific credentials of the initial project phase are quite unclear as it started as theatre group. For example no input was taken from the Antarctic research stations, where researchers experience extreme confinement. $27/adults, $15/children.  
• -77.85166.66666767 McMurdo Station. An American research station that doubles as the largest community in Antarctica. (updated Nov 2018)

• -32.37600620.81067883 SALT Telescope (Southern African Large Telescope). The largest single optical telescope in the southern hemisphere and among the largest in the world. (updated Mar 2017)
• -30.72121.41184 KAT-7, MeerKAT, PAPER, and SKA Africa. The SKA Telescope is the most powerful telescope ever conceived. Its precursor, MeerKAT, is already the most powerful telescope every built. Most of it is to be built in Africa under the auspices of SKA Africa. The core of the telescope is located near Carnarvon, on the Northern Cape, with more dishes located in Botswana, Madagascar, Mozambique, Zambia, Namibia, Mauritius and Ghana. (updated Mar 2017)
• -32.37944420.81055685 South African Astronomical Observatory (SAAO) (Cape Town). The national centre for optical and infrared astronomy in South Africa. The Observatory has a fascinating history dating back to 1820, which is when the main building was constructed, making it one of the oldest permanent structures in Cape Town. Owing to light and air pollution in the city, most of the actual observing happens in Sutherland in the Northern Cape, about 380 km from Cape Town. Some of the telescopes in Cape Town are still used for outreach and public events. (updated Mar 2017)

• -23.27133316.586 H.E.S.S. Telescope. One of the leading observatories studying very high energy (VHE) gamma-ray astrophysics. (updated Mar 2017)