Randall Flagg's Las Vegas penthouse suite was built on a sound stage. The room called for marble walls and floors, which was constructed from particle board painted to look like marble tiles.
Randall Flagg's symbol on the flags is quite similar to the Nazi swastika.
Ray McKinnon appears in the opening credits, but not in the closing credits.
Interestingly, his character's wife Sally Campion (played by Hope Marie Carlton) and the character Brad Kitchner (played by David Kirk Chambers) each appear twice in the closing credits.