切尔文要塞(The stronghold of Cherven)
切尔文要塞是12世纪至14世纪期间保加利亚第二帝国的主要军事、行政、经济和文化中心之一。堡垒的废墟位于保加利亚东北部卢塞以南30至35公里(19至22英里)的同名村庄附近。
The stronghold of Cherven was one of the Second Bulgarian Empire\'s primary military, administrative, economic and cultural centres between the 12th and the 14th century. The ruins of the fortress are located near the village of the same name 30 to 35 km (19 to 22 mi) south of Rousse, northeastern Bulgaria.