For this question, I had an actual answer ready, because it's been there since I was pretty dang young: Wayne Manor! Though technically I wouldn't want to visit there, I would want to live there. Particularly the Wayne Manor I grew up with, which was bright and kind of cozy despite the opulence as opposed to filled with dark wood and angst and portraits to prove that the Wayne Bloodline is inherently superior (a trait that seems to go hand in hand with having a lot of money).
But even so, there's still movie night and midnight snacks and after school snacks and best of all Alfred. Also if you poke around you're sure to find all sorts of mid-century once-thought-to-be-healthy doo-dads like UV lamps, medicine balls and those boxes where people used to sit with their heads poking out. It's just the place to go when you need to sleep off a hypnotic state, fella.( Also everyone there has fantastic pajamas )