A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

The oldest living tree in Manhattan comes shrouded in sinister legend.

The site of the deadly Triangle Shirtwaist Factory Fire.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Become a prohibition rebel.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The palatial McDonald's that inspired Wesley Willis.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

These pretty kitties killed and ate as many as 135 railway workers.

Years of archaeology, just chillin' by the water cooler.

A Bibliophile's Dream.

A speakeasy takes on Chicago's drinking culture.

An engineering masterpiece, or “Scheme of Madness?”