A swing to dangle you off the very edge.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

A bizarre house filled with an astounding array of collections.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A huge musical instrument played by the ocean.

An eccentric inventor's castle home with its own indoor weather system.

America's oldest archaeological site or a muddled case of wishful thinking.

A subterranean playground in an abandoned slate mine.

A wunderkammer hidden on the top floor of the Hartford statehouse.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.