Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

A derelict bit of transportation infrastructure hidden in the woods.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A much-maligned monument to teetotalism.

Art deco landmark on the outskirts of Washington, D.C.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

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

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

A community of collapsing homes more than a mile out from the Florida coast.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

This cave holds a surprisingly colorful variety of geological oddities.

A bizarre house filled with an astounding array of collections.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

A historic freight system that found the true gold rush is in tourism.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A massive sea stack famous for its appearance in The Goonies.

The world's largest egg has been cracked a number of times over the years but has been repeatedly replaced.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

Erroneously called the world's tallest flagpole, this landmark is devoted to "good neighborliness."

A hand-built folk art installation covered with messages of God's love.