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

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

The sign at the garden gate reads: “These Plants Can Kill.”

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

Unwanted and reluctant ownership, Gordon Lamp glimmers faintly and serves as a relic of the bygone Victorian era.

Believed to be inspired by the Trevi Fountain in Rome.

An English cenotaph honoring an American feminist icon.

One of the oldest Masonic buildings in England, and still in use today.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Murals of the wild parties once held on the frozen River Thames.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This is London's smallest listed building.

This building contains a door only used by members of the royal family.

Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

This sprawling, Brutalist estate feels like a city within a city.

London's amazing modernist public square that never was.

This statue of one of the engineers who created the London Underground hides a ventilation shaft for the tube lines that run under the street.

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This replica of the Greek structure is in the heart of Nashville.

At just 51 feet and 10 inches long, it's the shortest street in England.