Megachurch turned Catholic church comprised of 10,000 glass panes.

A small chapel celebrating the spiritual bond between dogs and humans.

This kitsch eatery is chock-a-block with bric-a-brac.

It specializes in outsider art and artifacts of secret societies.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

The ruins of the castle that chemicals built.

This magnificent Cincinnati graveyard is also a popular public park.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

Astounding collection of coin-operated games and automata.

The first full-scale tunnel built in America is short but scenic.

Ruins of a once-opulent grand Victorian resort.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

Stay at this storybook estate, featuring Sir Henry Hudson Kitson's masterpiece "Gingerbread House."

A popular tourist cave with a dark past.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

Live long and prosper in Tennessee.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

The history of the traveling carnival is remembered by this sprawling collection of vintage wagons, games, and rides.

An architect's childhood fantasy treehouse made real.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.