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Doors Open Ottawa, the second-largest Doors Open architectural event in North America, takes place during the first weekend in June. Over 100 buildings (many of which are normally closed to the public, such as embassies, official residences, museum storage buildings, and city infrastructure facilities) open their doors to the public, offering free admission to part or all of the premises. Most participating buildings also allow photography. While the event takes place Saturday and Sunday from 10AM to 4PM, not all buildings are open both days. It is a hybrid event, with virtual and physical visits. Reservations required at some participating buildings (including the US Embassy).
A collection of historic and current currencies from Canada and around the world, history of Bank of Canada and the application of interest rate in the society and economy.
A small museum at the foot of Parliament Hill with a focus on Ottawa's early history.
A working animal farm in the city. You can visit animal barns, see various demonstrations and exhibitions, and ride on a horse-drawn wagon. The museum also has a playground and picnic area. It is very popular with young children and a welcome change of pace for kids who have seen enough history after visiting some of the other sights.
Former RCAF base with civilian and military aircraft ranging from pre-World War I to modern, including 1920s-1940s bush planes, war planes from both World Wars and the Cold War, surviving components of the 1950s' Avro Arrow interceptor and Space Shuttle Endeavor's Canadarm, a Canadian-built robotic arm. Guided tours, boutique.
Galleries of fossils, mammals, birds and geology among others. Free admission Thursdays after 4PM and all day Canada Day (July 1st).