Pop culture has helped to keep this iconic British building from being destroyed.

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A fantastic castle rumored to be the birthplace of King Arthur.

An incarceration museum on the spot of possibly the oldest prison in England.

Catacombs turned marketplace.

A hands-off space for graffiti artists to hone and display their skills.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

One part local history, 99 parts gruesome haunted house.

Eighty million natural history specimens call this gargantuan museum home.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Famously misunderstood wonder of the ancient world

The world's largest collection of witchcraft regalia.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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 Harry Potter films.

The largest wooden building in the world now houses a fascinating collection of aircraft.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

Inside a humble hangar is some of the best roller derby the world has to offer.

Portlandia is the second-largest copper repoussé statue in the United States.

Two massive rock outcroppings on the Oregon coastline.