Lyutitsa

The fortress occupies an area of 26,000 m (280,000 sq ft) and has 12 towers of which eight have been preserved. The walls are up to 10 metres (33 ft) high. The ruins of two churches have been excavated as well as a necropolis with 15 graves. Among the numerous archaeological finds are rare coins, ceramics from Preslav, jewelry and tools.

• http://en.wikipedia.org/wiki/Lyutitsa