Sev Berd or Black Fortress (Armenian: Սև բերդ; Russian: Чёрная Кре́пость, Chornaya Krepost) is an abandoned Russian imperial fortress in Gyumri, Shirak Province, Armenia. The fortress, which lies 8 kilometres (5.0 mi) from the Turkish border, was built in response to the Russo-Turkish War of 1828–1829. It is a national cultural heritage monument in Armenia.