These ancient ruins were the final resting place of King Henry II's mistress.

This ancient oak tree sheltered accused "witches" in the 17th century.

This Victorian graveyard in Leeds is a macabre collection of beautiful tombs and memorials.

Where Agatha Christie mysteriously disappeared in 1926.

The only pub in the world surrounded by an ancient stone circle.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

The whimsical steel spider lurking in the shadows of this suspension bridge shows that engineers can have a sense of humor.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

17th century puritan church with connections to the Salem Witch Trials.

A writer's tiny retreat built from salvaged shipwreck timbers.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

One of the last doorless, continuously moving elevators still in use in the U.K.

A quiet country churchyard holds a monument to the last known sin-eater in England.

This medieval church tower has maintained its clockworks since the 16th century.

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

These quintessentially English stepping stones were built for Victorian tourists.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.

This medieval manor house was equipped with secret compartments for hiding priests.

This stone throne invites adventurers to observe breathtaking views of the Peak District.

A dramatic sculpture high up in Yorkshire with vistas on an industrial scale.

A monolithic monument in Greater London.

A hidden gem in the middle of the city's infamous Jewelry Quarter.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.