Hamilton, Ontario's culture has built on its historical and social background. Interesting attractions include a museum of aircraft (Canadian Warplane Heritage Museum), HMCS Haida National Historic Site, historic naval ship; Canada's most famous warship and the last remaining Tribal Class in the world, a stately residence of a Prime Minister of Upper Canada (Dundurn Castle), a functioning nuclear reactor at McMaster University, a horticultural haven (Royal Botanical Gardens), the Canadian Football Hall of Fame, African Lion Safari and Christ the King Cathedral.