Abstract dinosaur models in London.

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

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

The remains of Crystal Palace Great Exhibition of 1851.

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

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

Eighty million natural history specimens call this gargantuan museum home.

The anatomical-pathological collection of a man who changed surgery.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

The curios of pharmacist and collector Henry Wellcome.

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

One part local history, 99 parts gruesome haunted house.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

An unusual round church in London with a Templar past.

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.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

Mosaics, storks, and brothels—this ancient city has it all.

Founded as a refugee camp, now a popular tourist spot.

Lived-in building, bedecked with an astonishing array of mirror mosaics.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

Fourteen sculptures showing the development of a fetus stand outside a hospital for women and children.