A student driver's nightmare.

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

A tongue-in-cheek arcade where the games are based on everyday life.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A kaleidoscopic warehouse-maze of handmade neon signs.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

360° views of the city plus five floors of optical illusions and hands-on science.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.