Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

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

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Radioactivity still cause for concern at this urban explorer's paradise.

A man-made island in scenic San Francisco Bay.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Only six people can sit inside this delightfully quaint sanctuary.

This giant roadside fruit is home to an array of apple-based treats.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

An arresting temple full of mosaics as colorful as the politician they memorialize.

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

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

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

Soaring over the Niagara Whirlpool since 1916.

The giant birds honor two native North American species.

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

This Hindu temple is an architectural marvel designed and built according to ancient Indian principles.

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

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.