Belvedere House and Gardens is a country house located near Mullingar, in county Westmeath, Ireland on the north-east shore of Lough Ennell. It was built in 1740 as a hunting lodge for Robert Rochfort, 1st Earl of Belvedere by architect Richard Cassels, one of Ireland's foremost Palladian architects. Belvedere House, although not very large, is architecturally significant because of its Diocletian windows and dramatic nineteenth-century terracing.