At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Visit this playground of waterfalls, caves and sinkholes.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

All that's left of the quintessential "cabin in the woods."

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

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

This macabre shop, filled with art, oddities, and taxidermy is hidden in the heart of the French Quarter.

The world-record holder for the longest bridge stretching continuously over water.

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

An impressive collection of dollhouses and an homage to the frog-leg canning industry.

A treasure trove of rare and exquisitely detailed antiques

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

The only rotating bar in New Orleans has been slowly spinning since 1949.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

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

The crumbling remains of a 19th century fortess.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

This pop-culture shop also offers the chance to become part of their favorite tv show or movie.

This oddity shop contains everything from antique tools to a human skeleton.

After this former brothel closed, its interior remained almost frozen in time.