The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The "Prussian Versailles" that is as glorious today as when it was built.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A slice of central Asia in the middle of Berlin.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A museum glorifying the life of Stalin, located in the city of his birth.

Monks in the empyreal Alazani River valley have preserved their 1,000-year-old winemaking tradition.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

Unusual building appears to be haphazardly built from randomly piled bricks.

The last standing example of an ancient district's teatime tradition.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

When the Soviets destroyed the historic Armenian monastery they somehow left its bell tower intact.

This extensive collection of vintage Soviet cars is the only one of its kind in the Caucasus.

The secret room where early Bolsheviks cranked out propaganda fliers on a smuggled printing press.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

An ornate century-old elevator still connects the two halves of Bad Schandau.

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

The industrial monstrosity known as Bagger 258 is a colossal mining machine built in the DDR - but now left for dead in a German field.

Tallest - but not most powerful - wind turbine in the world.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.