This extensive nuclear fallout shelter built from 42 school buses could house 500 people in its tunnels.

A neutrino detector built into the largest man-made underground cavity in the world.

Possibly the world's largest coin stands just outside of a Canadian science center.

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

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

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

The statue of the famous elephant who was the original source of the word "jumbo".

The "birthplace of insulin," where Sir Frederick Banting realized the hormone could save the lives of Type 1 diabetics.

Clusters of abandoned buildings hint at the facility's 144-year history with psychiatric health.

Little island known for its massive beachfront "flowerpot" pillars.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

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

Soaring over the Niagara Whirlpool since 1916.

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.

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

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

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

Secret Swing.

The oldest landmark of Toronto is a testament to shifting sands.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

305 homemade stone stairs wind their way up the Hamilton escarpment.

This mid-19th century chapel is a tiny treasure for weary travelers.