The famous Beatle secretly visited this Illinois town several times to visit his sister.

A strange rock in Chicago marks the spot where a tree once stood in honor of the 18th President.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

The carved remains of a 200-year-old oak tree memorialize the namesake of the iconic "Wizard of Oz" character.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

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

This historic house museum that celebrates one of the world's most influential social reformers is also one of the most haunted locations in Chicago.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

Man-made geyser that rises to the exact height of the Gateway Arch.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

A chance to follow in the footsteps of the word's most legendary animator.

Home to a protest movement, a bombing, and a dramatic change in labor history.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

First planned industrial community in the United States.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

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

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

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.