The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

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

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

A restaurant and observation deck built in a unique broadcasting antenna.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

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

A mechanized clock where a man fights off a dragon, crab, and rooster.

A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

This subterranean funicular is one of the world's smallest subways.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The remains of this ancient fortress atop a manmade hill look as though they were built into a volcano.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

Biblical beasts and endangered animal preservation come together in this Israeli zoo.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’