This giant wooden treehouse within a sprawling garden has its own eatery.

The ritual has been performed uninterrupted for nearly 700 years.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

The final resting place of soldiers' loyal canine companions.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

There's an exclusive Beefeaters pub hidden in the Tower of London.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

A naturally mummified 2,000-year-old man.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

Giant, friendly pelicans in Central London, the most unlikely of places.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

London's smallest police station is barely the size of a phone booth.

Hear the quietest sound from across the dome.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.