This once luxurious Catskills resort is now a haunting ruin.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

"A hideous albatross in the Hudson River Valley."

This mouldering abandoned mental hospital was once a center for progressive healing.

A failed piece of Orientalism has become the proud symbol of a community.

This temple, built by an eccentric religious leader before his death, sits guarded and in ruins.

A house built from trash known as the poor man's Hearst Castle.

Machinery left over from California's once thriving mercury industry now attracts artists and explorers.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Ornate limestone building now filled with geologic specimens, and more.

If astronomy had a ghost, it would look like this observatory.

Connecticut's shot tower is near the end of its life.

Mansion and shopping center used in the 1975 film "The Stepford Wives."

A whimsical monument deep in this park commemorates the groups that helped build it.

This derelict building used to house infirm Freemasons, their widows, and orphans.

The "Skinny House" is made from scrap, salvage, and a neighbor’s kindness.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

Beautiful stained glass depictions of the history of human flight fill this surprising chapel.

A unusual sanctuary for abused and exotic animals in South Jersey.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

This abandoned sea fort has become an accidental bird sanctuary.

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 beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.