Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

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

A walk through the historic city center, under the streets of Seattle.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A layered tribute to the work of mosaicist Isaiah Zagar.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A bizarre house filled with an astounding array of collections.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

An enormous, inside-out glass globe built in 1935.

An emerald-green grotto just a short trip from Austin.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A crumbling hospital from the 1850s on Roosevelt Island.

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

A beautiful and abandoned New York subway station from 1904, complete with chandelier.