This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Hear the quietest sound from across the dome.

One part local history, 99 parts gruesome haunted house.

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

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

Eighty million natural history specimens call this gargantuan museum home.

This ancient Egyptian obelisk still bears the wounds of World War I.

An eccentric home in Sicily turns heads on a regular basis.

Climb the dead electric pylons of Messina.

An abandoned building that once tightened a power line that stretched across Messina Strait.

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

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

Pompeii's less famous neighbor is still revealing her secrets.

The famous sculptor had a hand in this imposing fortress.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Two stone columns flank the grand Venice square, but there were supposed to be three.