Like many pop culture institutions of the 20th century, Hanna-Barbera’s The Flintstones hasn’t been relegated to just one medium. The animated cast of America's favorite modern Stone Age family sold cigarettes, starred in a live-action 1994 film, and inspired all sorts of merchandise, including video games and lunchboxes. In 1972, it also got the theme park treatment.

Bedrock City, located 30 minutes from the Grand Canyon in Williams, Arizona, was the brainchild of Linda and Francis Speckels, a married couple who bought the property and turned it into a 6-acre tourist attraction. Concrete houses were built to resemble the Flintstone and Rubble residences and are furnished with props; a large metal slide resembles a brontosaurus, so kids can mimic the show’s famous title credits sequence; and statues of the characters are spread all over the premises. The site also doubles as an RV campground and parking site.

Matthew Dillon, Flickr // CC BY 2.0

Matthew Dillon, Flickr // CC BY 2.0

Matthew Dillon, Flickr // CC BY 2.0

When it first opened, Bedrock City employed actors to stay in character, but the remote location proved challenging to retain both employees and visitors. Over the past four decades, it's had a steady stream of tourists, but not enough to turn a huge profit. Atlas Obscura reports the attractions are in various stages of disrepair.

Linda Speckels put the property up for sale in 2015 with an asking price of $2 million, but it has yet to sell. One possible hold-up: The new owner would have to negotiate a fresh licensing deal with Hanna-Barbera and Warner Bros. for the right to continue using the show’s trademarks. (A separate Flintstones park in South Dakota, owned by another member of the Speckels family, was sold and closed in 2015.) With its proximity to the Canyon, the 30 total acres could be converted into almost anything, from a mall to a golf course. For Flintstones enthusiasts, the hope is that the park’s unique attractions won’t be reduced to rubble.