A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

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

These whimsical works of art tell the story of the city's past and present.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A unique botanical garden housed in three giant geodesic domes.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

3/4-scale model of the White House in Atlanta, Georgia.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

When Motown musicians came to Nashville in the 1960s they stayed at this historic record-pressing company because hotels wouldn't host them.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This landmark cemetery in Boston was created more than 300 years ago.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

An hour south of Punta Arenas (Chile) along the Strait of Magellan, a Kcymaerxthaere plaque tells the story of Culev Larsze, cursed to live without words in the fictional world of Kcymaerxthaere.

Ella Fitzgerald, opera singer Enrico Caruso, and dancer Isadora Duncan all performed in this lavish, supposedly haunted theater.

They squeal, they nosh, they look like predators.

These mythological giants take time out of their busy day guarding a Victorian market to let you know what time it is.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.