Collapsed television tower finds new life as a control tower for boat races.

London's amazing modernist public square that never was.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Rebuilt remains of a temple to Roman god Mithras.

Near the site where the English Archbishop was born, you can find an emblem in the shape of a pilgrim's badge.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

A secluded green oasis amidst the towering skyscrapers, bears an unusual moniker that reflects one of the city's oldest guilds.

A quiet memorial to those who died saving others in the heart of the City of London.

This hidden green space is the city's second largest conservatory.

A pair of gigantic baby heads greet passengers at Atocha Station.

This pub can leave even the sober feeling slightly unsteady.

A reportedly haunted 14th-century church is curiously facing the “wrong direction.”

Commemorating the first recorded car journey in the United Kingdom, a 56-mile trip that defied the speed limit the whole way.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

A lush indoor jungle fills this bustling Madrid transportation hub.

The world's first consecrated windmill.

Now isolated, this church was once the center of a bustling village that succumbed to the Black Death.

A statue of the heroine who stopped time to save her betrothed.

This preserved puppy was an adorable beacon of charity.

Overlooking the spot where the Pilgrims boarded the Mayflower stands Devon's answer to the Colossus of Rhodes.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.