Largest man-made excavation on earth!

Largest collection of mounted dinosaur specimens in the world.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

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

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Bizarre Cavern.

The trials and tribulations of marking Poe’s grave.

These unusual rooms on wheels are holdovers from the 1960s.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

Extraordinary objects lurk in this quintessential regional museum.

This pun was simply waiting to come to life, and one defense contractor made it so.

America's first public mental health facility.

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

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Outsider art meets paleontology at this roadside reptile repository.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

This abandoned train tunnel has been the subject of countless ghost stories for years.

A giant time capsule not scheduled to be cored until 2040.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.