This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

This abandoned lock-up was saved because of its connection to a local football team.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

A pair of connected skyscrapers form this symbolic gateway.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

Oriental bazaar in the heart of Sarajevo.

The place where World War I began.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

A war-torn Olympic relic is being overtaken by graffiti and nature.

Bridge that died in war and was resurected.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

An ingenious solution to a tricky engineering problem, this spiraling bridge takes drivers for a dizzying spin.

The deepest metro station in the world.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An art museum with an eclectic design and a scandalous past.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

Famously misunderstood wonder of the ancient world

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.