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

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

An ancient city exhumed from the depths of the ocean.

The deadliest diving spot in the world is also a stunning geological marvel.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The site of Austria's biggest concentration camp now honors its victims.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

Austria's very first and only nuclear power station was completed but never used.

A unique opportunity to stay the night in retrofitted sections of sewer pipe.

Dine amidst exotic plants at this former royal greenhouse.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Apartment complexes built into huge repurposed natural gas tanks.

The world's oldest known salt mine.

Ride a dragon train into a world of dwarves.

Visitors dip into a variety of pools of what was once ice.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Each year melting snow turns these Austrian hiking trails into scuba zones.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

The youngest volcano in Central America.

The largest garbage dump in all of Central America is home to a tragic community that make their living from the refuse.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.