This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

You will not be able to miss this building.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

The largest clown school in Britain offering accredited degrees.

The bones of two medieval royal lions were discovered at the historic fortress.

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

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

High-end antique collection housed in a centuries-old church.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

This coffee shop lies hidden beneath a historic church.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

Where condemned pirates met their grisly end at the gallows on the River Thames.

The monster at the center of the Darwin Center Spirit Collection.

Repository for more than 22 million pickled specimens.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

Remnants of a Victorian garden feature sitting in public woodland.

Hidden beneath the streets of London is a secret subway that only carried mail.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.