Next year I'll turn 60 and here in Alabama, USA, people 60 and over can go to the Community Colleges tuition free. I plan to take classes. Not for a degree, not even in just one area, I just want to be back to writing papers and doing homework.
I am a lifelong learner too! I also teach Community College, there are always interesting classes to take. I don't teach Art History, but if you spot one of those courses I recommend you give it a try.