This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

The Bourbon royal family had this unique octagonal hunting "cottage" built on a tiny islet in Lake Fusaro.

Two planes stand abandoned after the closure of an aircraft-themed restaurant.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

Drink wine handed out through a window as part of an age-old tradition.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This Italian foot path winds through the mountains via 52 individual tunnels.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Venice's island of the dead.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

100 year tradition of fist fights, marked by marble footsteps.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

The childhood home of one of Ohio's favorite sons, pilot and war hero Eddie Rickenbacker.

This massive airship factory is so large that it has its own indoor weather.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

The crash of this great airship signaled the beginning of the end for dirigibles.