The Plaza Mayor was built during Philip III's reign (1598–1621) and is a central plaza in the city of Madrid, Spain. It is located only a few Spanish blocks away from another famous plaza, the Puerta del Sol. The Plaza Mayor is rectangular in shape, measuring 129 m × 94 m (423 ft × 308 ft), and is surrounded by three-story residential buildings having 237 balconies facing the Plaza. It has a total of nine entranceways.