Budapest's Communist-era statues, banished to the suburbs.

Hiding the longest subterranean river known in the world.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

A towering baroque basilica jutting out of the French countryside.

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

When ecosystems collide in the arid Southwest.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

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

An Irish Memorial commemorating those who perished due to potato blight.

World's first "penitentiary," meant to be humane, drove men insane.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Berlin's old airport.