A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Visitors to this Kentucky homestead turned museum are immediately transported back to the Antebellum south.

This abandoned cemetery has a dark past of bodies buried over bodies.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

This botanical garden has been nicknamed "Alabama's Little Corner of Greece."

This ghost town houses the remains of Alabama's old state capital.

These ruins are all that's left of the former Alabama State Capitol.

One extremely determined man's homemade universe.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

Five acres of divinely inspired folk art.

The arboretum whose marshy soil sucked up the dreams of housing developers.

An equine tribute in a charming Southern city that calls itself "The Horse Capital of the World."

This museum of miniature displays provides a journey through early American history.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

A former 19th-century tavern, famous for its peach brandy and honey concoction.

Malibu's first beach home features an astonishing trove of ceramic tiles.

Victoriana on Orange Grove Avenue.

Home of what was the largest hydraulic mine in the world, producing gold and the first diamonds in the U.S.

A rare surviving example of a pre-WWII Japanese garden, restored after years of neglect.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

Experience the "opulence, grace, and grandeur of Eureka's most famous Victorian Inn."

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.