Old House of Keys

The Old House of Keys is the former meeting place of the House of Keys, the lower house of Tynwald, the Isle of Man's parliament. It is located across the street from Castle Rushen in Castletown, the former capital of the Isle of Man, in the south of the island. The building was used as the House of Keys from 1821 until 1874, when the parliament was moved to Douglas.

Prior to 1821, the House of Keys had no official home, but met first at Castle Rushen, and later at the Bishop of Sodor and Man's library in Castletown. After criticism from a Royal Commission, plans were drawn up for a new meeting house for the Keys in 1813, but after concerns about the cost, they were redrawn and approved in 1819. The building, designed by Thomas Brine, was completed in 1821.