Legend says this sacred tree was a gift from goddess Athena.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Every hour on the hour a naked heroine and her leering foil appear from this giant cuckoo clock.

A preserved block of timber buildings from the city's industrial era in the Middle Ages.

This sculpture of Edward of Woodstock is surrounded by eight Victorian lamp bearers.

One of three sites in England that house the National Collection of Arms and Armour.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

400-year-old garden, restored to beauty.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.

This futuristic German television spire is actually the world's largest digital clock.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

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.

A massive marble foot is tucked away in a small alley near the Pantheon.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.