Church of St. Peter at Poříčí, Romanesque and Gothic church in New Town, Prague, Czech Republic.

The Church of St. Peter at Poříčí is a three-nave basilica with two towers on its west facade, the only surviving element of the Romanesque basilica. Its walls are one metre thick, built of opuka blocks set in lime mortar, and the interior combines Romanesque arcades with Gothic rib vaults from 1483–1497.

Built in the second half of the 12th century as a Romanesque basilica, it served the German community of the vanished settlement of Poříčí. Around 1200 the Teutonic Order established a hospital and residence here. A Gothic reconstruction began in 1382, when the northern Romanesque aisle was demolished and replaced by a double nave; work continued until 1411.

The church long served as a gathering place for German-speaking communities in the medieval settlement of Poříčí. Today it is maintained by the Knights of the Cross with the Red Star and continues as an active place of worship.

The building stands on Biskupská Street and houses well-preserved Romanesque towers along with a Gothic portal. The Romanesque towers are clearly visible from outside and show the different building phases.

Excavations during renovations in the early 1900s revealed multiple construction phases and documented the shift from Romanesque to Gothic periods. These findings helped clarify the exact timeline of the rebuilding.