Inside this library, the history of Los Angeles is retold through a mural.

A Romanesque sanctuary of calm amid the bustle of downtown Los Angeles.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

This giant temperature attraction created some giant electric bills.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

One of America's most historic homes also holds a startling literary legacy.

A Milwaukee museum provides an unsparing and ultimately empowering look at the Black American experience.

A unique botanical garden housed in three giant geodesic domes.

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

A Bibliophile's Dream.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This 90-year-old building is home to possibly the most New Englandy social club in existence.

This historic hotel invented the chocolate brownie.

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

The oldest alley in San Francisco is paved with a reminder of the city's original shoreline.