This small fort played a huge role defending Puerto Rico’s capital city.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This colorful gate stands as an entrance to the walled city of Old San Juan.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The first memorial dedicated solely to the Black troops who fought for the Union.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

The birthplace of a titan of American cinema.

Where a brain, a beauty, a jock, a rebel, and a recluse met one Saturday and changed their lives forever.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The sign to a demolished amusement park now stands in front of a local library.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

The clothes-washing king doubles as a community center with some unusual features, including an aviary filled with finches.

A hot dog stand where the heads are just as hot as the dogs.

Huge abstract sculptures of the Puerto Rican Flag.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

A Chicago Movie Palace Lost to Time.

Illegal drag racing two stories beneath Chicago’s streets.

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