The Bishop's Palace, a Georgian mansion dating from 1741, covers Waterford's history from 1700 to 1970 and displays a wide-ranging selection of treasures from the city's coffers, from period furniture, oil paintings and Georgian silverware to old photos recording the 1960s heyday of Irish showbands. Most interesting is the original dining room set with period tableware including the world's oldest surviving piece of Waterford crystal, a decanter dating from 1789.