 Complete the following phrase:  Very little of medieval Glasgow remains; the two main landmarks from this period being the 15th century Provands Lordship and 13th century St. Mungos 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 