Electoral Palace (Treves)

The area was already built upon in Roman antiquity, and under Constantine the Great, a complex palace structure was erected around the imperial throne room. From the 11th century onwards, the Bishops of Trier used the Basilica of Constantine as a castle. In the 17th century, Electors Johann VII. von Schönenberg and Lothar von Metternich began constructing a new late Renaissance-style palace, named St. Petersburg. Under Elector Philipp Christoph von Sötern, construction continued, and the Lower Palace was added. In the 18th century, Elector Johann Philipp von Walderdorff had the south wing redesigned in Rococo style.