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

Eighty million natural history specimens call this gargantuan museum home.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The world's most active stratovolcano is almost always erupting.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

This is the oldest Roman-made bridge in the city still existing in its original state.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The Pope’s secret escape route.

Drink wine handed out through a window as part of an age-old tradition.

The oldest operating pharmacy in the world features 800-year-old recipes.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.