Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

This Tennessee museum is dedicated to a tragic railroad hero who inspired the famous ballad that bears his name.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A medical facility that has been kept frozen in time.

Nature and art meet in this curvy creation

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

New York City's smallest piece of private property.

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

The site of the deadly Triangle Shirtwaist Factory Fire.

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

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

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The home of the first American-born saint is one of the only curved buildings in New York.

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

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

A wedding chapel, vintage clothing shop, and bar all under one roof.

This scented city oasis was a labor of love.