The Old House of Keys in Castletown was the meeting place of the House of Keys, the elected lower chamber of Tynwald, from 1821 to 1874. Designed by Thomas Brine and completed in January 1821 at a cost of £1,039 10s, it replaced an earlier chamber in the Bishop's library that had been criticised as inadequate. In 1866 the Keys underwent a pivotal reform, moving from a self-elected body to one chosen by popular vote, following sustained public pressure. When Douglas became the island's capital the Keys relocated to the Court House there in 1874, and the Castletown building was later used by Dumbell's Bank and then Parr's Bank before becoming Castletown's Town Hall. Manx National Heritage restored the building in 2000 and opened it as a museum in 2001, recreating its appearance at the time of the 1866 reform.