Most popular astronomical observatories BulgariaHaskovo Province Astronomical observatories Haskovo province Astronomical observatories Haskovo Province mapSee on the map Haskovo province astronomical observatories by popularity rating +DIMITROVGRADBulgariaGiordano Bruno Observatory See astronomical observatories in other regions Haskovo Province Smolyan Province Sofia Varna Province Other categories:MuseumsAnimalsFortressesChurches
