Information about Bedrock City in Williams, Arizona. Arizona’s Bedrock City has been welcoming fans of The Flintstones for nearly 50 years, but all that has come to an end, according to the Arizona Republic. The Flintstones … Arizona Start planning your Arizona vacation with the Official State Visitor's guide - available in print, electronically, or both. A 47 year old beloved road side attraction! 2,776 likes. Bedrock City Alliance, Williams, Arizona. The quirky roadside attraction … The park was opened in 1972, … Fill out the form to request your free travel packet, which includes an Arizona Official State Visitor's Guide and an Arizona … The Flintstones Theme Park Bedrock City is along AZ-64 near the AZ-180 intersection, just south of the Grand Canyon, in the city of Williams, Coconino County, Arizona. Bedrock City, a send up to the classic Hanna Barbera cartoon, "The Flintstones," has been operated by Linda and her late husband Frank Speckels since 1972, according to radio station KJZZ. Bedrock City was a Flintstones-themed roadside attraction that consisted of an amusement park and an RV park in Williams, Arizona.. Background.