The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

This man-made waterfall was designed to help improve access for spawning salmon.

A sea cave with a waterfall and Viking past

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

An abandoned village where the ruined foundations cling to a cliff.

A collection of short standing stones covers this hillside.

This ruined travelers shelter sits abandoned in a desolate bog of Flow Country.

This rare surviving broch is one of Scotland's most impressive Bronze Age structures.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

A spectacular disused railway viaduct in a beautiful countryside nature reserve.

A little-known ruin with a convoluted history and a fascinating latrine drainage system.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

From here, the loch appears to take the shape of mainland Scotland.

The ruins of a defunct limestone quarry still haunt this Scottish promontory.

The oldest residential street in Europe also features an optical illusion.

These giant sculptures are supported by a bizarre menagerie of feet.

Britain's tallest megalith towers over the cemetery of a quiet English village.

This modern labyrinth lies in the shadow of a ruined medieval castle.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This Roman amphitheater is said to be King Arthur's legendary Round Table.

An iconic waterwheel in the Pennine Hills marks the location of one of Britain’s most profitable lead mines.

Bronze plates placed around this Scottish fishing village form a true-scale model of the solar system.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.