Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

Historical etchings such as “Miserable, wild, distracted 1350" and “The Archdeacon is an ass.”

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

The first German gnome who popularized the garden decoration.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The narrowest house in America is seven feet of pure spite.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

Pennsylvanian mass grave and possibly mass murder.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This WWII aircraft museum presents its wrecks like taxidermy, complete with recreations of the crash sites.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

This overlooked street light once served as a KGB dead letter box.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

Every year locals tumble 650 feet down to the bottom of the hill chasing a Double Gloucester cheese.

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

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

Vast fan-shaped British cemetery honouring American servicemen lost in World War II.