Sofia Region
Gorge of Erma River
The picturesque gorge of Erma River (Tran Gorge) is situated at a distance of about 3 km from the town of Tran and is one of the most attractive landmarks in this part of the country.
Temnata Dupka Cave
The Temnata Dupka (Dark Hole) is one of the longest caves in Bulgaria.
Duhla Cave
The Duhla Cave (Wind’s Breath Cave) is the longest cave in Bulgaria, with an overall length of 18 km.
Krakra Fortress
The medieval Krakra Fortress is situated on a relatively small rocky plateau at the southwestern part of the town of Pernik.
Serdika
The remains of the ancient fortress Serdika are presented in the underpass between the Presidency and the Council of Ministers in Sofia City.
Boyana Church of St. Nicholas and St. Pantaleimon
Boyana Church of St.