The Peterskirche (Church of St Peter), situated just north of Graben, was built in 1733 according to plans of the celebrated baroque architect Johann Lukas von Hildebrandt. Interior highlights which make a visit highly worthwhile include a fresco on the dome painted by JM Rottmayr and a golden altar depicting the martyrdom of St John of Nepomuk.
This was not the first baroque church built in Vienna (the Dominikanerkirche has that honour), nor is it considered the finest (the Karlskirche with its glass elevator to the cupola, pips it at the post), but it is one of the most attractive. Free pamphlets inside explain the interior. Regular organ recitals and concerts are also held here.