The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

100 year tradition of fist fights, marked by marble footsteps.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Secret refuge and museum of the Duke of Florence.

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

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

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This bridge was constructed from the rubble of the infamous Bastille.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

One part local history, 99 parts gruesome haunted house.

The celebrated eyesore created by starry-eyed sweethearts.

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Only hotel where you can legally launder money.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.