Ancient Greek buildings of timber, clay and plaster construction were probably roofed with thatch. Ordinary people lived in houses made of reeds plastered with mud and roofed with thatch. Bathing machines were roofed and walled wooden carts rolled into the sea. It may be roofed with thatch, shingles, corrugated iron or banana leaves. Gazebos are freestanding or attached to a garden wall, roofed, and open on all sides. The building is roofed in slate with three chimneys. In 2000, the courtyard was roofed over. These were usually roofed and often partially enclosed by latticework to keep out animals. In 1814, the refectory was roofed and converted into a schoolhouse. The internal buildings were roofed with bark. The walls, gates and wickets are also roofed. The nave was roofed over by 1554. They were roofed by domes which came to symbolize heaven. A number of Romanesque churches are roofed with a series of Domes. The complex has been recently roofed and renovated.