The most visited pilgrimage destination in Montenegro, the Ostrog Monastery is also one of the most popular Christian sites in the world. The 17th-century Serbian Orthodox monastery is carved into a mountain cliff 2,953 feet (900 m) above the Zeta Valley, and is dedicated to Saint Basil of Ostrog, who is buried there. The upper section of the monastery contains the Church of the Presentation, home to Saint Basil’s relics and 17th-century frescoes, as well as the Church of the Holy Cross, a small cave church. The lower monastery holds the Church of the Holy Trinity and the monks' residences.
Tradition dictates that pilgrims walk the three kilometers from the lower to upper monastery barefoot. Spectacular views of the Bjelopavlici plain await at the top.