I recently discovered his travel talks series. When he was starting out, Rick said he would go and give slide shows anyplace that would have him (and sell his books). He is very good at this and I've been watching his talks about the various parts of Italy. He stands on a stage with slides and talks for about 30-40 minutes and, frankly, it's almost more useful than his shows. I learned more about Cinque Terre, Florence and Rome from his talks than from any of his episodes. They're a bit hard to find on a Roku, but easy to search for on a computer or tablet and then transfer. Try one and see. The only caveat is, they seem to be 5 to 10 years old but hey, it's not like Sistine Chapel has changed (but things like hours and prices will).
His cohort Steve Smith handles the shows for France, obviously he knows his stuff since he lives there but he's not as good a performer as Rick.