The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

One woman's lifelong collection is on display in this unassuming house on an Icelandic fjord.

Walk in the footsteps of the gods and straddle two tectonic plates.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A lush indoor jungle fills this bustling Madrid transportation hub.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

Europe’s most powerful hot spring supplies the surrounding region with hot water.

Elevated freight railway turned wildly successful urban park.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Metro station with a claim to rock n' roll fame.

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

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

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.

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

One of the world's heaviest musical instruments towers within a popular urban park.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

Antique frame collection with 2,400 frames.

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