Single runway interrupted by a busy road that cuts across its middle.

Semi-mystical manmade towers of rocks decorate this rocky seaside.

This historic electric train has operated with regularity since the early 1900s.

This historic black and white monastery is one of Bulgaria's architectural jewels.

Massive, unfinished broadcasting station stands as a monument to the fall of communism.

The site of many battles and tragedies, including the 40 maidens who leapt into the sea.

Rock carving created 1,300 years ago 75 feet off the ground.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

A moving memorial to the fallen and missing from WWI trenches.

A rare example of World War I trenches from the British front.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

What was once a bustling mining installation is now a bustling hub of contemporary art.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

Brussels' favorite peeing boy has a sister.

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

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

This interactive sculpture allows visitors to leave a message in case a friend passes by.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.