There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

A lovely biographical museum in the artist's home of 24 years.

Rediscovered in 1992, this abandoned medieval village once flourished by fishing and piracy.

A once-magnificent collegiate church is falling into ruin.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This bike path traverses the treetops.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

This abandoned Belgian fortress is purposefully being left to nature.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A small museum in this border city displays the contraband art that has been stolen back from smugglers.

This rare collection of human deformities displays fetuses with two faces, one eye, and "mermaid" legs.

Remnants of the city's Soviet history hover over this modern fast-food outlet.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

This hidden gem in Arizona is truly worth the rugged journey.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

The largest and most well-preserved petroglyph site in the Verde Valley.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

What is the Thing?