You’ve probably come across this blog at some point, but just in case you haven’t, here.
I’d like to propose a UK-centric addition: Greenwich. I went there with my girlfriend and some friends for her birthday, to see the planetarium show – narrated by Sir Patrick Stewart – and lounge in the park. I have not seen such a sea of white faces since my secondary school photo. Perhaps there should be subsets within Greenwich, though: eg,”planetariums”, “hills” (see also Hampstead, Richmond), “anything involving Patrick Stewart”, “enjoying calling people Sir”.