| University of Tokyo Atacama Observatory | astronomical observatory | 🇨🇱 Chile | | 5,640 | 2009 | | -22.9867 |
| Ali Observatory | astronomical observatory | 🇨🇳 China | | 5,047 | | National Astronomical Observatory of China | 32.3258 |
| Monte Bianco obsertatory | astronomical observatory | 🇮🇹 Italy | | 4,807 | 1893 | | 45.8328 |
| Llano de Chajnantor Observatory | astronomical observatory | 🇨🇱 Chile | | 4,800 | 1999 | | -23.0228 |
| Indian Astronomical Observatory (IAO) | astronomical observatory | 🇮🇳 India | | 4,500 | | Indian Space Research Organisation | 32.7794 |
| Gemini North | astronomical observatory | 🇺🇸 United States | T15 | 4,213 | | NOIRLab | 19.8238 |
| Gemini Observatory | astronomical observatory | | | 4,213 | 1999 | NOIRLab | 19.8238 |
| Maunakea Observatories | astronomical observatory | 🇺🇸 United States | 568 | 4,205 | 1968 | | 19.8222 |
| Canada–France–Hawaii Telescope | astronomical observatory | 🇺🇸 United States | T14 | 4,204 | 1979 | National Center for Scientific Research; University of Hawaiʻi at Mānoa; National Research Council Canada | 19.8253 |
| W. M. Keck Observatory | astronomical observatory | 🇺🇸 United States | | 4,145 | | California Association for Research in Astronomy | 19.8263 |
| National Astronomical Observatory of Japan Hawaii Observatory | astronomical observatory | 🇺🇸 United States | | 4,139 | 1997 | | 19.8255 |
| Subaru Telescope | astronomical observatory | 🇺🇸 United States | T09 | 4,139 | 1997 | National Astronomical Observatory of Japan | 19.8256 |
| Llano del Hato National Astronomical Observatory | astronomical observatory | 🇻🇪 Venezuela | 303 | 3,600 | | | 8.7864 |
| University of the Andes station | astronomical observatory | 🇻🇪 Venezuela | 302 | 3,600 | | | 8.6728 |
| Sphinx Observatory | astronomical observatory | 🇨🇭 Switzerland | | 3,571 | 1937 | | 46.5475 |
| ATLAS–MLO observatory | astronomical observatory | 🇺🇸 United States | T08 | 3,408 | | | 19.5362 |
| Magdalena Ridge Observatory | astronomical observatory | 🇺🇸 United States | H01 | 3,230 | | New Mexico Institute of Mining and Technology | 33.9767 |
| Entoto Observatory and Research Center | astronomical observatory | 🇪🇹 Ethiopia | | 3,200 | | Ethiopian Space Science & Technology Institute | 9.1084 |
| Mount Graham International Observatory | astronomical observatory | 🇺🇸 United States | | 3,191 | | Steward Observatory | 32.7012 |
| Eastern Anatolia Observatory | astronomical observatory | 🇹🇷 Turkey | | 3,170 | 2012 | Atatürk University | 39.7807 |
| Mount Terskol Observatory | astronomical observatory | 🇷🇺 Russia | B18 | 3,127 | | International Center For Astronomical, Medical and Ecological Research | 43.2747 |
| Haleakalā Observatory | astronomical observatory | 🇺🇸 United States | | 3,052 | | Institute for Astronomy | 20.7083 |
| ATLAS–HKO observatory | astronomical observatory | 🇺🇸 United States | T05 | 3,030 | | | 20.7076 |
| Observatoire de Saint-Véran | astronomical observatory | 🇫🇷 France | 615 | 2,930 | | | 44.6979 |
| Sierra Nevada Observatory | astronomical observatory | 🇪🇸 Spain | J86 | 2,896 | 1981 | | 37.0642 |
| Pic du Midi Observatory | astronomical observatory | 🇫🇷 France | 586 | 2,877 | | Observatoire Midi-Pyrénées | 42.9367 |
| Lulin Observatory | astronomical observatory | 🇹🇼 Taiwan | D35 | 2,862 | 1999 | National Central University | 23.4693 |
| Amundsen–Scott South Pole Station | astronomical observatory | | | 2,835 | 1956 | United States Antarctic Program | -89.9975 |
| Quito Astronomical Observatory | astronomical observatory | 🇪🇨 Ecuador | 781 | 2,823 | 1873 | | -0.2149 |
| Catalina 40" Telescope | astronomical observatory | 🇺🇸 United States | I52 | 2,791 | | | 32.4426 |
| Mount Lemmon Observatory | astronomical observatory | 🇺🇸 United States | G84 | 2,791 | | Steward Observatory | 32.442 |
| Mount Lemmon Survey | astronomical observatory | 🇺🇸 United States | G96 | 2,791 | | | 32.4428 |
| Apache Point Observatory | astronomical observatory | 🇺🇸 United States | 705; 645 | 2,788 | | New Mexico State University | 32.7803 |
| Cloudcroft Observatory | astronomical observatory | 🇺🇸 United States | V29 | 2,751 | | | 32.9795 |
| Assy-Turgen Observatory | astronomical observatory | 🇰🇿 Kazakhstan | 217 | 2,750 | | | 43.2239 |
| Oukaïmden Observatory | astronomical observatory | 🇲🇦 Morocco | Y67 (HAWK); Z53 (TRAPPIST-North); Z01 (OWL-Net); Y63 (SNX-NET); Z02 (HAO); J43 (MOSS) | 2,750 | 1988 | European Southern Observatory; Jura Observatory; University of Liège | 31.2061 |
| Tian Shan Astronomical Observatory | astronomical observatory | 🇰🇿 Kazakhstan | N42 | 2,735 | | Fesenkov Astrophysical Institute | 43.0576 |
| Gemini South | astronomical observatory | 🇨🇱 Chile | I11 | 2,722 | | NOIRLab | -30.2408 |
| Vera C. Rubin Observatory | astronomical observatory | 🇨🇱 Chile | X05 | 2,673 | | Large Synoptic Survey Telescope Corporation | -30.2446 |
| Maidanak Observatory | astronomical observatory | 🇺🇿 Uzbekistan | 188 | 2,650 | | | 38.6847 |
| Very Large Telescope | astronomical observatory | 🇨🇱 Chile | | 2,636 | 1998 | European Southern Observatory | -24.6275 |
| Paranal Observatory | astronomical observatory | 🇨🇱 Chile | 309 | 2,635 | | European Southern Observatory | -24.6272 |
| Lomnický Štít Observatory | astronomical observatory | 🇸🇰 Slovakia | 059 | 2,632 | 1939 | | 49.1967 |
| Fred Lawrence Whipple Observatory | astronomical observatory | 🇺🇸 United States | G91; 696 | 2,606 | 1966 | | 31.6811 |
| Observatorio Astronómico Nacional de Colombia | astronomical observatory | 🇨🇴 Colombia | | 2,600 | | | 4.5962 |
| Leoncito Astronomical Complex | astronomical observatory | 🇦🇷 Argentina | 829 | 2,552 | 1983 | | -31.7986 |
| Kuiper Telescope | astronomical observatory | 🇺🇸 United States | V06 | 2,510 | | | 32.4169 |
| TUBITAK National Observatory | astronomical observatory | 🇹🇷 Turkey | A84 | 2,500 | 1991 | | 36.8242 |
| Thai National Observatory | astronomical observatory | 🇹🇭 Thailand | | 2,457 | 2013 | National Astronomical Research Institute of Thailand | 18.5906 |
| Devasthal Observatory | astronomical observatory | 🇮🇳 India | | 2,450 | | Aryabhatta Research Institute of Observational Sciences | 29.3617 |