A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

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

The largest preserved walking dragline excavator in Western Europe.

This device was crucial to the Industrial Revolution development of Leeds.

A Museum of Psychiatry in a still-operating mental institution.

These morbid carvings remind churchgoers of the inevitability of death.

A giant scrawl on the skyline of south London.

This 1920s Dutch barge is now a floating bookstore.

Winner of the Leeds Award for Architecture and the Environment.

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

A Brutalist monument in the middle of a housing estate by artist Victor Pasmore.

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

The last fully working Victorian Turkish bath in England.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

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

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

Makers and sellers of the original and finest York Ghosts.

At 22 feet tall, these Bronze Age monoliths are some of the tallest standing stones in the United Kingdom.

The house in the middle of the motorway.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

One of three sites in England that house the National Collection of Arms and Armour.

The name of this suspended sculpture is Latin for "high horse," which is exactly what it is.

This sculpture of Edward of Woodstock is surrounded by eight Victorian lamp bearers.