This structure, located in Moncton, New Brunswick, was designed and constructed by R.C. Donald between 1921 and 1922. It was apparently inspired by Roman Arenas, but was originally designed with a concrete, conical roof. As the building neared completion, cracks appeared about 3 metres from the rim. The building inspector demanded the roof be changed to wood.
At considerable expense, the concrete roof was removed and the concrete used as the foundation of Donald Street in Moncton. The rink was finally opened and served as a sporting and concert venue, featured festivals, pageants and carnivals when not in use as a skating rink.
On February 26, 1928, a fire destroyed the roof of the structure
Located pretty much in someone's back yard, I sorta tip-toed through the tall grass to go inside. The description above, regarding the inspiration of the Roman Arenas was very evident when you stand in the middle and look around.
There are some stories I've read about the place indicating that the fire that destroyed the roof also claimed lives, but the sources were questionable, and inconsistent. If you find yourself in Moncton, it's kind of a neat place.