Collection of vintage trailers double as hotel rooms.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

What is the Thing?

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A unique attraction and museum dedicated to exploring iconic roadside structures.

A Texas-sized particle collider that was abandoned due to its Texas-sized budget.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Rome’s legendary peephole vista is also a former Crusader stronghold.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

One part antique store, one part curiosities hodge-podge.

San Francisco's newly reopened hands-on science museum.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

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

The magic's in the hole!

An alchemist's “magic door” stands in the middle of a Roman park.

The final resting place of New Orleans' most famous voodoo priestess.