A rare labyrinth-style path carved into a historic hill.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

A retirement home for soldiers that can trace its history to the Elizabethan era and beyond.

This quaint mortuary chapel hides a stunning Celtic Revival and Art Nouveau interior.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

Constructed from recycled wrought iron railroad tracks, it's been described as the most beautiful seaside pier in England.

These mysterious circular formations are actually remnants of 19th century gristmills.

The world's only above water sand volcano, believed to once be the bathtub of a priest.

A bench and a bridge pay tribute to Birmingham's favorite heavy metal band.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

400-year-old garden, restored to beauty.

Grab a cuppa at England's first and only domestic tea plantation.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A circle stone within a stone circle.

A open air theatre built on a cliff by an eccentric British woman.

A granite rock formation littered with various species of moss, lichen, and fern.

This stone quarry was used to make axes and other tools more than 6,000 years ago.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.

A rare view of a preserved Victorian science museum.

World's first "penitentiary," meant to be humane, drove men insane.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.