The Flintstones and another in Valle, Arizona. Both have been in operation for decades. Bedrock City, also known as Flintstone Park, closed in August 2015. Another existed until the 1990s at Carowinds in Charlotte, North Carolina. In Canada, Flintstone Park in Kelowna, British Columbia, opened in 1968 and closed in 1998; it was notable for the "Forty Foot Fred" billboard of Fred Flintstone which was a well known Kelowna landmark. Another "Flintstones" park was located in Bridal Falls, British Columbia, which closed in 1990. Calaway Park outside Calgary, Alberta, Canada, also opened with a "Flintstones" theme and many of the buildings today
The Jetsons Meet the Flintstones Fred and Barney repair their friendship, and George offers his partnership with Mr. Slate to give them their jobs back. Just as they are about to leave for home, Elroy tells them the time machine is broken and cannot be repaired. Fortunately, they're able to return to the Stone Age because Fred's car absorbed the time machine's "quadrapotents". The Flintstones and the Rubbles then bid a fond farewell to the Jetsons and are sent back to the Stone Age. The special is referenced in "The Simpsons" episode "A Star Is Burns". Bart Simpson is watching "The Flintstones Meet the Jetsons"