The history of radiation is on safe display at the foot of a radiation science laboratory.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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

An architectural oddity hides in plain sight on this iconic London bridge.

The only pub in the world surrounded by an ancient stone circle.

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

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

One of Europe's oldest libraries.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

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

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

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

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

The final resting place to 300 Victorian-era pets hides inside the city park.

The curios of pharmacist and collector Henry Wellcome.

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