A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

A Neolithic burial tomb connected with a colorful array of legends.

Quirky Welsh observatory unites art and science.

The largest of only eight working transporter bridges left in the world.

Recently restored menagerie of Victorian-era beasts.

The painting on an aptly named street honors the 1980s slasher movie.

The castle still holds traces of the abandoned Roman fort it was built atop.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

The centuries-old obelisk may have inspired J. R. R. Tolkien.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

It houses a menagerie of wondrous taxidermy specimens from around the world, including the remains of a famous gorilla.

An array of ancient artifacts from Bronze Age Bristol and other civilizations are housed in this museum.

A medieval cave used to shelter local hermits now holds nearly 200 old Quaker gravestones.

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

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.

One of the few places where inexperienced snorkelers can spot a shark.

More than 140 granite sculptures decorate the lawn of this French sculptor.

This unattributed sculpture in Amsterdam is hiding in plain sight.

The oldest working mechanical clock in the world.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This abandoned five-star hotel is now a five-star urban exploration destination.

Final resting place of Antarctic explorer Ernest Shackleton.

A kaleidoscopic warehouse-maze of handmade neon signs.