Old House of Keys

The Old House of Keys is a historic building in Castletown, Isle of Man. It was the seat of Tynwald, the parliament of the island before it was moved in 1874 to Douglas.

After the relocation of the Parliament, the Old House of Keys has been used in various ways until it was empty from 1980 to 2000. In 2000, the responsibility of the building of Manx National Heritage was adopted. It was subsequently restored after its original appearance in 1866, and now serves as a museum.