Hop aboard one of the authentic London-style double deckers or turn-of-the-century trolley for a full-day guided city tour. The tour begins at the Gray Line kiosk at the corner of Sparks and Elgin Streets and runs in a continuous loop that permits you to hop on and off at your favourite sites. Among the many sights in Ottawa are the Canadian War Museum, Parliament Hill, Canadian Museum of History, Notre Dame Basilica, Rideau Hall, RCMP Museum and Stables, Canada Aviation & Space Museum, National Gallery, ByWard Market, Rideau Canal, Dow's Lake and Canadian Museum of Nature.