The little-known second castle that William the Conqueror built in York.

An incredibly well-preserved piece of ninth-century Viking poop.

One of the shortest streets in York has an especially odd name.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

London's marvelous wildfowl reserve along the Thames.

Eliza and Mary Chulkhurst were the first famous conjoined twins in England, but it's not clear when they were born.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

This medieval church is the only one in the world that features all Marc Chagall stained-glass windows.

This window celebrates the role of tea, coffee, cocoa, and cotton in creating the fortune of the man who commissioned it.

This rare aquatic phenomenon is one of the more accessible tidal bores in Morecambe Bay.

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

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

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

The oldest candy store in the world has been selling traditional sweets since 1827.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

A small waterfall tucked away in the forest of Harmby Gill.

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.

The dramatic remains of an abandoned farmhouse sit high on the edge of a remote hillside.

A winding medieval path was used by mourners to carry their dead to the nearest church.

A steep and winding road in the Yorkshire Dales passes by these deep natural potholes.