Observatories

Other Buildings categories:  Towers  ▪  Skyscrapers  ▪  School and universities  ▪  Government and institution buildings  ▪  Airports  ▪  Palaces  ▪  Pavilions  ▪  Longhouses  ▪  Museums  ▪  City halls  ▪  Castles  ▪  Fortresses  ▪  Casinos and gambling centres  ▪  Convention centres and trade fairs  ▪  Theatres and operas  ▪  Hotels  ▪  Stilt houses  ▪  Ruins  ▪  Religious buildings