Very little of medieval Glasgow remains; the two main landmarks from this period being the 15th century Provand's Lordship and 13th century St. Mungo's Cathedral, although the original medieval street plan (along with many of the street names) on the eastern side of the city centre has largely survived intact. Also in the 15th century began the building of Cathcart Castle, completed C.1450 with an impressive view over the landscape in all directions. It was at this castle Mary Queen of Scots supposedly spent the night before her defeat at the Battle of Langside in May 1568. The castle was demolished in 1980 for safety reasons. The vast majority of the central city area as seen today dates from the 19th century. As a result, Glasgow has an impressive heritage of Victorian architecture: the Glasgow City Chambers; the main building of the University of Glasgow, designed by Sir George Gilbert Scott; and the Kelvingrove Art Gallery and Museum, designed by Sir John W. Simpson, are notable examples.