Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

A contemporary fresco movement illustrates the region's rich history.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

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

Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Two thirds of this Montreal neon icon has survived to flash another day.

Immortalized in bronze, this frazzled student will be glued to his screen for centuries.

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

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

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

Half of a waterfall goes into the river while the other half seems to disappear.

This friendly fellow was built to honor an advancement in mineral processing.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

When waves crash onto this section of beach, the rocks sing a song.

A larger-than-life version of the hat beloved by hunters, outdoorsmen, and Holden Caulfield.

The largest ski jump in the Western Hemisphere hasn't hosted skiers in decades.

Only the original archway remains from the building where a false cry of "fire" started a panic that claimed more than 70 lives on Christmas Eve in 1913.

On the shores of Lake Superior, a small group of monks makes sacred sweets.

This missionary's legacy looms large over the Upper Peninsula of Michigan—literally.

Large one-man sculpture park in Michigan.

This freshwater spring fills with 10,000 gallons of water per minute.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.