Andorra:

La Massana (Starlight Reserve): Has designated dark sky areas

Ordino: The Sorteny Valley

Engoslasters Lake:

Mirador de Nagol (Sant Julià de Lòria): A free, 24/7 viewpoint with minimal light pollution, facilities for picnics.

Belgium:

The Ardennes (Wallonia)

Centre Ardenne Observatory (Naomé): Offers guided sessions

Volkssterrenwacht Armand Pien (Ghent): An accessible observatory

Seven Stars Pavilion (Enghien): A historic spot for astronomy

Bulgaria:

Rila Mountains

Rhodope Mountains with Shiroka Polyana Lake

Vitosha mountain

Pancharevo and the Lozen Mountain

Croatia:

Lastovo Archipelago Nature Park: An island known as the "Island of Bright Stars"

Petrova Gora - Biljeg: Croatia's first International Dark Sky Park

Jelsa (Hvar Island): Croatia's first International Dark Sky Community, promoting dark sky preservation.

Sveti Urban in Međimurje

Vojak mountain peak at Učka in Istria

Petrov vrh, Slavonija

North: Kalnička gora, Ivanščica, Strahinjčica, Ravna gora i Cesargradska gora

Observatories & Astro-Parks in Croatia:

Višnjan Observatory (Tičan):

Hvar Observatory: One of the oldest and most famous in Croatia

Makarska Observatory: Offers guided tours and stargazing sessions (June-Sept), all-year Astro-playgrounds.

Zagreb Observatory: A historic spot in the Upper Town

Rijeka Astronomy Center

Križevci Observatory

Mountain & Coastal Spots:

Biokovo Nature Park (Skywalk)

Pula observatory

Star Village Mosor

Gacko polje (Lika)

Vojak (Istria): The highest peak in Istria

Island Hotspots (Beyond Designated Areas):

Mljet & Kornati National Parks

Brač: Vidova Gora peak and Blaca desert

Czech republic:

Official Dark Sky Areas:

Jizera Dark Sky Area (JOTO): The first international dark sky park in Europe, located on the Czech-Polish border.

Beskydy Dark Sky Area: Located in the Beskydy Protected Landscape Area near the border with Slovakia.

Features: Considered one of the best locations for both visual observation and astrophotography.

Activities: The Dark Sky Centre on the Gruň Ridge (approx. 900m altitude) offers 2-hour guided evenings with large astronomical telescopes and commentary.

Manětín Dark Sky Area: north of Pilsen.

Includes several villages that have voluntarily agreed to regulate their lighting to preserve the night sky.

Natural High-Visibility Locations in Czech Republic:

Šumava National Park: the Modrava region

Novohradské Hory:

Podyjí National Park:

Bohemian Switzerlandnational park

Observatories and Planetariums:

Štefánik Observatory (Prague): Located near the Petřín Lookout Tower

Brno Observatory and Planetarium

Ondřejov Observatory: A historic institution established in 1898, home to the Astronomical Institute offers public tours.

Kleť Observatory: 1070 meters above sea level

Ždánice Observatory