King House is an early Georgian mansion located in the centre of the town and was restored in 1989 after some years of neglect, including surviving potential demolition for a car park. The house was built for Sir Henry King (d. 1839) MP, 3rd. Lord Kingston, between 1720 and 1740, whose family were one of the most wealthy in Ireland. It was subsequently home to Edward King, 1st Earl of Kingston. The design is attributed to William Halfpenny (d. 1755) who was an assistant to Edward Lovett Pearce.