St. Peter's Church (Peterskirche) is located on Petersplatz, right next to Graben.
The construction of the Baroque church was begun around 1701 and the design was inspired by the St. Peter's Basilica of the Vatican in Rome.
By 1722, most of the building was finished, and in 1733, the Peterskirche was finally consecrated to the Holy Trinity.
It was the first domed structure in baroque Vienna.