A slice of central Asia in the middle of Berlin.

It's always summer at the beach inside this former airship hangar.

A statue of Vladimir Illyich Lenin guards this abandoned building in the "Forbidden City."

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

For more than 170 years, this family-run bakery has been serving Berlin’s best Baumkuchen, or “tree cake.”

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

Painstakingly built dioramas sit unnoticed in a Boston office building.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

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

Started as a kitchen garden, now the second largest botanical garden in the world.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

This watchtower once presided over the Berlin Wall.

Breathtaking Byzantine paintings cover the inside of this 12th-century church.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

The water here is so clear you can see the mysteriously sunken ship from the surface.

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Dine at a legendary after-hours joint frequented by David Bowie and Iggy Pop.

An abandoned swimming pool decays on the outskirts of Berlin.