The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

Monsters and miniatures are held in equal esteem at this wondrous museum.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

The middle finger of modernity.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

These crumbling towers are some of the last remnants of a centuries-old Vietnamese culture.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

This Torino museum honors a soldier who kept the city safe using barrels of exploding gunpowder, losing his life in the process.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Right up until the 20th century this network of man-made caves was the biggest village in Eastern Armenia.

A massive underwater sinkhole made famous by Jacques Cousteau.

This Ecuadorian cemetery is home to a jaw-dropping topiary wonderland.

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

A lover's walk between hilltop towns, decorated with graffiti love notes.

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

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This lurid German fountain plots the sad course of marriage from dating to death.

This "Jewish Sistine Chapel" was designed to reinvigorate Judaism's artistic legacy but was almost lost to misguided restoration.