Enormous lake at the bottom of a unique cave system.

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

This replica medieval European village in the Dominican Republic was built by a Hollywood set designer.

The first hospital in the New World.

The final resting place of Christopher Columbus - or possibly someone else.

An eccentric German artist built this weird and wondrous castle packed with shocking sculptures and alien art.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

Renowned restaurant tucked in a cave once occupied by buccaneers.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

An entire town in Haiti memorializes one man and his historic revolution.

Broken Catholic cross now worshiped in the voodoo faith.

The royal seat of Henri Christophe, a formerly enslaved man who became Haiti's only king.

Thousands of Haitians travel to the waterfalls to ask the Virgin Mary of Mount Carmel and her voodoo counterpart Erzulie for healing in a yearly pilgrimage.

Amazing pre-Civil War ruins alongside a shallow, rocky river that hosts beautiful (but endangered) lilies.

The last refinements in the North Carolina-South Carolina boundary were marked with this stone.

A nearly century-old amusement park is quietly decaying in a riverside forest in South Carolina.

This airfield is home to a number of retired vintage planes in various states of disrepair.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A hobby born from insomnia has turned into a hangar full of objects that have been be-buttoned by the Button King.

The sole remaining outpost of a once-thriving South Carolina chain still sells “pic-a-nic” baskets.