Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

This historic Victorian hotel has a scandalous history of affairs and murder.

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

Few other hotels can rival the grandeur of the Castle in the Rockies.

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

The celebrated eyesore created by starry-eyed sweethearts.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

This demon atop the Notre-Dame de Paris looks utterly bored.

This bridge was constructed from the rubble of the infamous Bastille.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

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

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Macabre astrological automaton clock dating to the late 1400s.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome’s legendary peephole vista is also a former Crusader stronghold.

Singapore's oldest Hindu temple.

The most playful of the life-sized statues that make up Singapore's "People of the River."

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

One of the world's tallest flagpoles.