Church of St. Augustine, Old Goa

The Church of St. Augustine in Old Goa was built between 1597 and 1602 on Monte Santo, the Holy Hill, by Augustinian friars who had reached Goa in 1587. It was once counted among the three great Augustinian churches of the Iberian world, with El Escorial and São Vicente de Fora. The ruins form part of the World Heritage Site of the Churches and Convents of Goa.

The church was abandoned in 1835 when the Portuguese government began expelling religious orders. Its vault fell in 1842, its bell was moved to the Immaculate Conception Church in Panjim by 1871, and the facade and half the tower collapsed in 1931. Part of a single four-storey laterite tower is all that stands today, and it is among Goa's most visited sights. ASI excavations in 2005 recovered bone fragments that DNA tests suggest most likely belonged to Queen Ketevan of Georgia, martyred in 1624. Since 2015 the ruins have hosted the Ketevan World Sacred Music Festival.