This is a pro tip, but also a summer tip, take the ferry from Lower Manhattan to Rockaway and spent the day. The beach is great and the area is impossible to gasp that it's 30 min from Manhattan (without traffic) - Eat as many tacos you can, cause it's the best in the state of New York!
The absolute, hands down, no question about it, COOLEST place in New York City. 6th Street Specials. Home to Hugh and Fumi - two of the nicest and most down to earth guys you’ll ever meet that also happen to build, restore and service some of the most sexy, badass and simply gorgeous vintage and custom motorcycles on the planet. Enough said.
This park sits halfway between my apartment and my studio. I spend a a lot of time hear sketching and making phone calls. The trees are beautiful during spring and fall.