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.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The "Seinfeld" diner.

Elevated freight railway turned wildly successful urban park.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

This ancient market is often referred to as the oldest shopping mall in the world.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

A Nesting Doll of Churches.

2300-year-old Roman road connecting the empire.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

These items are all that remain from the room used by the author during his second tour of the U.S.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

The world's largest piece of copyrighted artwork.

Millions of numbers carved in glass represent the tattoos forced upon victims.

This impressive Boston holy house is the American mecca for Christian scientists.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.