Not really the go-to-guy for things to do in NYC, but if I had visitors from out of town (not EY; places like middle america), I’d take them to see Shomer Shabbos, 770, bobov, satmar, (does’nt matter which).
If they’ve never seen a tish (and not all folks have) they might find that ineresting. If that’s too much to handle, the “balagan” of 13th avenue, Lee Ave,or Kingston Ave is also a real eye-opener.
Or just let them watch dismissal at a major yeshiva / BY. That still fascinates me (and I live here!)