Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Walk the whole Mississippi River!

Mile-long cave system near Great Smoky Mountains.

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

More than five miles of underground passageways.

Visit this playground of waterfalls, caves and sinkholes.

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

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

Home of an evil witch famous within southern folklore.

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

Enormous lake at the bottom of a unique cave system.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

A wondrous old library overlooking the nation's capital.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A 14-foot monument marks the resting place of two of the town's earliest residents—and one unknown soldier.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

This historic mansion was built as a symbol of love between a husband and wife.

What was once the largest NFL stadium.

An abandoned castle owned and ignored by Masons carries a cursed history.