Part of Portugal's national heritage, the Carmo Catholic Church was founded in 1736 and opened for worship on July 24, 1768. Visitors can see the Hidden House (the narrowest house in Porto), the chapel, the catacombs, the treasury, and three other rooms with ancient paintings and vestments. The church features a mixture of Baroque and Rococo styles and an impressive exterior lined with statues of the prophets Elijah and Elisha, carved in Italy.