While I am primarily an A to B rider, I plan for rest days every 5 and use them to find a nice place to layover and hang out. But, more than a nice place, I want to meet nice people, so I expend a great deal of effort to find hosts (couchsurfing, warmshowers) where I get to spend time with nice people indoors.
I agree with SBRDude that if I want to see a place, I plan to spend time there, usually with my wife, not bike through.
Ray