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

This one has sailed five times as far as Sir Francis Drake's famous ship.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

This coffee shop lies hidden beneath a historic church.

This 1920s Dutch barge is now a floating bookstore.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

These lamps were created to expel sewer gases after an event known as The Great Stink.

Take afternoon tea in a 17th-century almshouse.

Huge winged monument in the United Kingdom.

England's largest white horse isn't even white.

This gorgeous space is England's largest independent library outside of London.

The remains of a Dominican friary, once one of the largest of its kind in the United Kingdom.

This sculpture commemorates a naturalist and an illustrator whose work was a forerunner to modern field guides.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

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

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

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.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.