The once fortified old Bregenz Upper Town (Oberstadt) occupies the site of the Celtic and later walled Late Roman town of Brigantium. It's a wonderful area to explore on foot as many of the streets have preserved their old world character and charm, and in places, remnants of the old 13th-century town walls still stand.
Other Upper Town highlights include the Old Town Hall (Alte Rathaus), a half-timbered building from 1622; the Deuringschlösschen, a little palace built in 1698; the walled Capuchin Monastery and Church from 1636 with the Chapel of St. Joseph (added in the 18th century); and the splendid Parish Church of St. Gallus, a simple 14th-century Gothic structure rebuilt in 1738 and notable for its rich Late Baroque and Rococo interior decoration.