One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A century-old tradition has culminated in a small but singular collection of feline effigies.

The heroic tale of a remarkable pup who refused to leave her master's side, no matter what.

This mysterious hilltop collection of Druid carvings isn't quite what it seems.

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

This home on a quiet suburban street is completely covered with vibrant mosaics.

An incarceration museum on the spot of possibly the oldest prison in England.

Catacombs turned marketplace.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A hands-off space for graffiti artists to hone and display their skills.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

This English medieval castle is where King John died of dysentery.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

A 600-year-old mini shrine guarded by a sword-wielding knight hides in a crumbling cliff face.

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

This South London cemetery holds the remains of more than 15,000 people.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Semi-precious Blue John stones have been mined in this cavern system for centuries.