Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Giant, friendly pelicans in Central London, the most unlikely of places.

One of the U.K's earliest public water supplies is within the "plague village."

Eyam took steps to quarantine themselves and keep the plague from spreading.

Some of England's last cave dwellers lived and worked within this huge cave.

This network of narrow, medieval passages has the most delightful name.

An incredibly well-preserved piece of ninth-century Viking poop.

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.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

Sweden's "good old days" painstakingly re-created in a model village.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

It's always game time at Stockholm's only museum devoted solely to video games.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.