A semi-scholarly approach to sex.

A toxic ghost town sitting atop a massive coal fire.

Stroll through a wonderland of stupendous moss-covered trees.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

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

Enormous lake at the bottom of a unique cave system.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

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

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

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

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

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

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

A bizarre house filled with an astounding array of collections.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.