Britain has 450,000 listed buildings, 20,000 scheduled ancient monuments, twenty-six World Heritage Sites, 1,624 registered parks and gardens (that is, gardens and parks of historic significance), 600,000 known archaeological sites (and more being found every day; more being lost, too), 3,500 historic cemeteries, 70,000 war memorials, 4,000 sites of special scientific interest, 18,500 medieval churches, and 2,500 museums containing 170 million objects.