This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

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

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

Step inside Lucy, the world's largest "elephant."

An outlandish shoe shaped house built by an eccentric millionaire.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

A museum dedicated to exhibiting remarkable outsider art.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Exact replica of the ancient monument, but much, much lighter.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The face of a woman pushes its way through the earth.

Three courses accompanied by Christian rock.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The world's longest known cave system.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A local farm's collection of unusual structures from a now defunct storybook amusement park.