The locks are in a beautiful area along the Rideau Canal in Ottawa. It was a unique opportunity to watch manual locks in operation. The only other manual locks I've witnessed are in Muskoka Lake and Nippissing Lake and they were tiny. Worth checking out.
Great place for when you are feeling overwhelmed by the national narrative and want to step into Ottawa's local history. They have the wax cast of the hand of D'arcy McGee! As well as other Victorian funeral oddities and a working model of the locks so you can see how they work without waiting the 20 minutes it takes to put an actual boat through.
The Ottawa Art Gallery is very beautiful inside and the architecture is really something to see both inside and out. The paintings are impressive, but I am not so big on the exhibits. Walking around inside and outside is definitely worth it. If you just want to see the architecture I think they will let you in for free.
It is beautiful on the inside with the wood-carved saints at the altar and paintings of Christ on the cross, etc. Even though it is a large building, it maintains a comfortable (welcoming) feeling on the inside. An excellent experience all-round.
We really enjoyed our visit to this museum. A lot of history and moving stories and images of how our soldiers fought to preserve our Freedoms.