San Antonio de la Tuna Ruins

The Hermitage of San Antonio de Padua de la Tuna is an archaeological site located near the Guajataca River in Coto, Isabela, Puerto Rico, dating from 1730. It comprises the ruins of a village church that was abandoned in the early 19th century when the community, with the permission of Governor Salvador Meléndez, moved to a more favorable location nearer the coast, which became the modern town of Isabela, founded in 1819.The hermitage was listed on the U.S. National Register of Historic Places in 1983. The ruins are easily accessible from the main PR-2 road.

Source: Wikipedia