We had a lagoon near us in Calgary ("Bowness Park") that would completely freeze over in the winter as well, to the point that not only could we ice skate on it, but the park management had a zamboni they could use to clean it! Now that's frozen.
I sure hope those swans were finding some good munchies!
That’s awesome about the Zamboni! We have a lot of skating ponds here. Some people clear a rink on the lake near their house. But also many public parks have enclosed rinks that they flood in the winter so the kids can skate. Needless to say, hockey is huge here!