Where America's first doomsday cult awaited the end of the world.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A dilapidated dock tells the story of Titanic's missed arrival.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

One man's homage to the sun continues to grow like a glass fractal.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A toxic ghost town sitting atop a massive coal fire.

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

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

A once grand hotel is being retaken by the wilderness it once capitalized on.

This secluded walking trail is a hidden gem of a Pittsburgh park.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A beautiful oddities shop crammed with strange and morbid curiosities.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Ship skeletons haunt Baltimore's waterways.

This free, take-a-book shop seems like a trick but isn't.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.