Sinaia (sēnĪˈä) [key], town (1990 pop. 15,817), S central Romania, in Walachia, in the Transylvanian Alps. It is a health and winter sports resort and has a metalworking plant and manufactures such as foodstuffs and building materials. Sinaia was the summer residence of the kings of Romania until the abdication (1947) of King Michael. In the town are two former royal palaces (one of which, built in Renaissance style, contains an internationally famous art collection) as well as the royal hunting lodge, a 17th-century monastery, and a castle.