 Astronomical observatory | Italia | Monte Porzio Catone | 401 m |
| Astronomical Observatory A.L. Kekin | Rusia | Kekin High School | 100 m |
 Astronomical Observatory and Planetarium "Nicolaus Copernicus" | Bulgaria | Municipio de Varna | 14 m |
| Astronomical Observatory and Planetarium - Yambol | Bulgaria | Yambol | — |
| Astronomical Observatory at the Youth Center - Haskovo | Bulgaria | Haskovo | — |
| Astronomical Observatory Cosmos Dome | Japón | Prefectura de Yamagata | — |
 Astronomical Observatory Dietrich Schiel | Brasil | São Carlos | — |
| Astronomical observatory et planetarium in San Giovanni | Italia | San Giovanni in Persiceto | — |
 Astronomical observatory Gabrovo | Bulgaria | Gabrovo | — |
| Astronomical Observatory in Alto da Sé | Brasil | Pernambuco | — |
| Astronomical Observatory in Kolonitskom plateau | Eslovaquia | — | — |
 Astronomical Observatory in Tradate | Italia | Tradate | — |
| Astronomical observatory Leipzig | Alemania | Leipzig | — |
 Astronomical observatory Manfred von Ardenne | Alemania | Dresde | — |
| Astronomical Observatory named after Professor Robert Głębocki | Polonia | Gdansk | — |
 Astronomical Observatory of Abruzzo | Italia | Teramo | 390 m |
| Astronomical Observatory of Capannoli | Italia | Capannoli | — |
| Astronomical observatory of Castelgrande | Italia | Castelgrande | — |
| Astronomical Observatory of Farra d'Isonzo | Italia | Farra d'Isonzo | — |
 Astronomical Observatory of Kharkov National University | Ucrania | Járkov | — |
| Astronomical Observatory of Kyiv Shevchenko National University | Ucrania | Óblast de Kiev | 156 m |
 Astronomical Observatory of Kyiv University | Ucrania | Kiev | — |
 Astronomical Observatory of Lviv University | Ucrania | Leópolis | — |
 Astronomical Observatory of Paraíba | Brasil | Paraíba | — |
 Astronomical Observatory of Saratov State University | Rusia | Sarátov | — |
| Astronomical Observatory of Shumen university | Bulgaria | Shumen | 493 m |
 Astronomical observatory of Siena observatory | Italia | Siena | — |
 Astronomical Observatory of the Infante D. Luís Geophysical Institute | Portugal | Santo António | — |
 Astronomical Observatory of the Jagiellonian University | Polonia | Voivodato de Pequeña Polonia | — |
| Astronomical Observatory of the National University of Asuncion | Paraguay | Asunción | — |
 Astronomical Observatory of the University of Kazan | Rusia | Kazán | — |
| Astronomical Observatory of the University of the Punjab | Pakistán | — | — |
 Astronomical Observatory of Trieste | Italia | Trieste | — |
 Astronomical Observatory of Vilnius University | Lituania | Vilna | 101 m |
| Astronomical Observatory St. Petersburg State University | Rusia | San Petersburgo | 20 m |
| Astronomical Observatory University of Siena | Italia | Siena | — |
| Astronomical Research Observatory, Charleston | Estados Unidos | Charleston | — |
| Astronomical Research Westfield observatory | Estados Unidos | Westfield | — |
| Astronomical Society Višnjan | — | — | — |
 Astronomical station at North Caucasus of Kazan Federal University | Rusia | Arjyz | — |
| Astronomical Station Vidojevica | Serbia | Beli Kamen | — |
 Astronomical Tower in Clementinum Prague | República Checa | Praga 1 | — |
| Astronomihagen observatory | Noruega | Vormstad | — |
 Astronomische Nederlandse Satelliet | — | — | — |
 Astronomische Station „Tycho Brahe“ | Alemania | — | — |
 Astronomisches Zentrum Schkeuditz | Alemania | Schkeuditz | — |
| Astronomy Centre | Reino Unido | Todmorden | — |
 Astronomy Club of Kosova | Kosovo | Pristina | — |