The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

To find the "unicorns of the deep" you've got to go downstairs.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

A chessmaster's dream destination.

Illegal drag racing two stories beneath Chicago’s streets.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Hop on the train and tour an elaborate miniature town made completely of junk (including the train).

This giant temperature attraction created some giant electric bills.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Statue dedicated to the star of an old television show.

One of the last functioning antique elevators in Chicago.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

The "lovely red Vega" of the legendary record-settling pilot.

A fascinating little museum all about the rich history of Peru’s famous plant.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Huge stone depressions which may have acted as an Incan agricultural experiment.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.