The world’s largest concentrated solar plant generates as many problems as megawatts.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

Home to the world's oldest functioning orrery.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

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

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

Ruins of a German Castle on top of a towering stone pillar.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A grassy pyramid named after a French battle.

A monument hidden in the woods built in 1938 as a getaway for a Dutch museum curator.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

One of Ireland's most infamous prisons for rebels including men, women and children.

The celebrated eyesore created by starry-eyed sweethearts.

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

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