Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

A student driver's nightmare.

A section of the long chain that blocked enemy ships from entering Constantinople.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

300 years of pharmaceutical history on display.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

Banksy's image of a naked man dangling from the window of a sex health clinic.

One of Bristol's best-hidden gems has ties to Lord Byron, whence it became the nation's first reformatory school for girls.

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The oldest working mechanical clock in the world.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Europe's largest prehistoric mound – burial site of a legendary king?

It's possible to walk inside one of the largest Neolithic tombs in Britain.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

Ancient human remains unearthed around the iconic monument.

Famously misunderstood wonder of the ancient world

The first archaeological site discovered by aerial photography.