Kiev Pechersk Lavra, also known as the Kyiv Monastery of the Caves, is a historic Orthodox Christian monastery located in Kyiv, Ukraine. Founded in 1051, it is one of the oldest and most significant religious sites in Eastern Europe. The complex features stunning architecture, including churches and bell towers, and is recognized as a UNESCO World Heritage Site. The monastery is famous for its extensive underground cave system, where monks lived and were buried. Visitors can explore these caves, which house mummified remains of saints and other religious figures. The Kiev Pechersk Lavra remains an important center for spirituality and pilgrimage in Ukraine.