Two groundbreaking brothers from Pasadena.

One of Hollywood’s favorite government buildings.

The second-largest giant sequoia in the world.

A 19th-century cabin built into a hollowed-out Sequoia tree.

The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.

Loyal fans of one television's most famous painters still come to pay their respects.

Measuring approximately 200 feet long, Swampy is the world's largest alligator-shaped building.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

It's a pretty creepy lock-up.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

The longest structure of its kind ever built in Michigan.

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

The park is home to the United States's only still-operating Dutch windmill.

In this quiet park a rendition of a classic painting graces the outside of a charming restroom.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

"The Most Boring Road in the State."

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The only surviving prototype for Buckminster Fuller's house of the future.

What was once the largest NFL stadium.