The medieval castle built as headquarters for the Pope's secretive Knights Templar.

This small chapel is built of human bones and decorated with a golden skeleton.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

Be on the lookout for the symbolic insect all over the city.

All that remains of the only English cathedral destroyed in the Protestant Reformation.

Built in the 1300s, this magnificent building that hosted England's kings and queens transports you to the Middle Ages.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The metal frame is all that's left of a wicker sculpture which once towered over the M5 motorway.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

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

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

The last four extravagant street signs of London's historic banking street.

Follow the original medieval paths that wind through this intriguing section of the city.

One of England's most famous churches hides a pair of little known architectural treasures.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The oldest working mechanical clock in the world.

A century-old tradition has culminated in a small but singular collection of feline effigies.