A swamp and garden tour featuring local wildlife and exotic botanical specimens from around the world.

One of the world's oldest olive trees, thought to be over 2,000 years old.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

A submerged archeological park still holds the wonders of a Roman Sodom.

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

The Atlantis of Cape Cod reemerges during the lowest of tides.

An ancient city exhumed from the depths of the ocean.

A submerged village appears when dam levels drop.

Fine dining 20 feet below the surface in the Indian Ocean.

The world's largest aggregation of great white sharks is at a mysterious spot in the middle of the ocean.

Golden plates containing what would become the Book of Mormon were believed to be buried on this New York hillside.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

This century-old ruined temple was reborn as "The Church of Skate."

This bridge is so steep it looks like a rollercoaster.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

A wooden dock art installation on Chiloé Island taps into the island's indigenous mythology.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A hugely vast Irish landscape of barren rock that stretches for miles.

A lush green oasis in the middle of Chicago.