This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

One of the largest underground systems runs under Canada's largest urban center.

This massive, ancient stone was disassembled and then put back together again.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

This whimsical fountain pays tribute to Toronto's four-legged friends.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

Canada's subterranean Cold War museum has doubled as a movie set.

A sprawling Victorian farm that has been surrounded by a capital city is one of Canada's greatest treasures.

This illuminated sign was the first of its kind in Canada and remains a vestige of the Atomic Age.

This inexpensive lodging house was once a prison notorious for its inhumane practices.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.