For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Large Hadron Collider and the Birthplace of World Wide Web.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

Ancient snack bar of the Roman Empire re-opened.

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

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The yawning maw of this pagan visage is said to bite off the hands of liars.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Cold war icon and onetime "hole" in the iron curtain.

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

A mocking tribute to the past and modern leadership of Prague.

Walk over a 150 year old manhole.

A hip bar decorated with walls of golden skulls.

New York City's smallest piece of private property.

Unrepaired walls from a 1920 anarchist bomb attack.

"Mock all and sundry things, but leave the saints alone."

Historic Hull Street was actually the first street with a proper name in the Boston area.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."