This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

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

In the world's most bombed country relative to its size, this incredible organization helps pick up the pieces.

When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

A shrine built to combat the bad karma of a commercial venture.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

An ancient Egyptian temple in the middle of Madrid, Spain.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

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

An unusual round church in London with a Templar past.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Follow the original medieval paths that wind through this intriguing section of the city.

Huge winged monument in the United Kingdom.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The Liverpool street made famous by the Beatles is real.

The western face was supposedly left clock-less to snub the Welsh.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.