Colorado Boulevard’s historic bookstore, operating since the bustling city of Pasadena was merely some orange groves and a few ostrich farms.

Some of the most unusual (and in some cases, disgusting) flavors of soda imaginable.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A faux European lane smack dab in downtown L.A.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

The remains of a ruined mansion memorialize the 1906 earthquake.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Where the U.S. government kept its actual treasure, before Fort Knox.

Perhaps the most scandalous statue of America's first president.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

In one Chicago park, a trio of werewolves are waiting to devour their fallen brethren.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Illegal drag racing two stories beneath Chicago’s streets.

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

A display of magnificent stained glass windows is the first exhibit of its kind.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

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