Most popular astronomical observatories GreeceAttica Astronomical observatories Attica Astronomical observatories Attica mapSee on the map Attica astronomical observatories by popularity rating +PENTELIGreecePenteli Observatory+ATHENSGreeceNational Observatory of Athens See astronomical observatories in other regions Attica Other categories:MuseumsChurchesBeachesLookoutsAncient templesPublic squaresMonumentsMonasteriesCavesStreetsGardensParksBoardwalksCathedralsMilitary museumsBotanical Gardens
