As one of five ducal residences of medieval Bavaria—besides Landshut, Munich, Straubing and Burghausen—the city of Ingolstadt features many Gothic buildings, such as the "Herzogskasten" ('old ducal castle', ca. 1255) and the New Castle, which was built from 1418 onwards. The largest church is the Gothic hall church of Our Lady (Liebfrauenmunster), which was begun in 1425. The church was built to serve as a second parish church besides Saint Maurice as well as the burial place for Louis and his family and intended to be the official burial place for the future Dukes of Bavaria-Ingolstadt. Its peculiar and rare angle of footprint was emulated in the 20th century built Cathedral of Newark. Also the churches of Saint Maurice (1235) and of the Gnadenthal and Franciscans monasteries date from the Gothic era. The Kreuztor (1385) is one of the remaining gates of the old city wall and to this day the key landmark of the city. The Gothic Old City Hall was constructed in the 14th century, and later altered several times.