Think you have a tough job? Try carrying 200 kilos through a cloud of sulfur down the side of a volcano.

This tiny lake temple dedicated to a water goddess seems to float on the surface.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

A statue honors the children who fought Nazis in Poland.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Tiny memorials honor individual victims of the Holocaust.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

On top of a resort town as old as the Bronze Age sits an incredible war memorial statue overlooking the beaches below.

A tiny church on a man-made island in the Adriatic.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

A curious cave church carved into the face of a cliff.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Cold war icon and onetime "hole" in the iron curtain.