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 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

The large collection of pre-Columbian pottery might make you blush.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.

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

A natural history wunderkammer in the middle of the desert.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.

The tiny church offers succor to travelers driving by, but only eight at a time.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

Perhaps the only prehistoric monument with its very own public bus stop.

Perhaps the most scandalous statue of America's first president.

The forgotten tomb of the Peruvian rubber baron who was the inspiration for Werner Herzog's epic film "Fitzcarraldo."