The only castle in North America to ever house European sovereigns.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Beneath the most controversial monument in Mexico City is a cultural center that exhibits only digital art.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

The best place to send your postcards home from Antarctica.

Sleepy Minneapolis block beats Guinness Record for most churches on one city block.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

A museum dedicated to the history and exploration of both popular music and science fiction.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

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

A walk through the historic city center, under the streets of Seattle.

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

A wall of chewing gum moonlights as collective art.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

A historic freight system that found the true gold rush is in tourism.

One toy collector's legacy of hundreds of unique items includes the most diverse display of northern indigenous dolls.

One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.