For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

The world's largest anatomically accurate brain sculpture.

The first spinning jail built in the United States is the only one that still turns.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

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

San Francisco's newly reopened hands-on science museum.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

A park where you can watch the highway zoom past.

This Indianapolis landmark offers a secret panoramic view of the city. 

The largest historic preservation organization in the United States.

This stately clubhouse has showcased German-American culture for over a century.

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."

This whimsical park encourages its visitors and wildlife to roam on and around the various works of art.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

This multisensory alley has the ability to remind bustling citygoers to stop and smell the roses.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

Nature and art meet in this curvy creation

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.