You may be thinking of the O'Neill L-5 space colonies
Some of the designs, which came out just a few years after RWR, look a lot
like the inside of Rama with land, clouds, and buildings curving up and around
inside the immense cylindrical ship.
See here:
http://www.nss.org/settlement/space/index.html
I don't know if a film or documentary of any sort was ever made of them, either.
But if someone does know, do tell, thank you.
