Books are Magic is a great local spot for bookworms. The staff is warm and friendly with regular events happening monthly. 

AIR at Summit One is a multi-story, completely immersive environment 91 floors above the street in midtown Manhattan. A stunning, transportive world created by digital and installation artist Kenzo, it is designed to transport you to another world away from the street culture of NYC and into an alternate state of consciousness. Peak time to go is sunset, when the mirrored environment transitions from magic daylight vistas to an internal LED system that removes all sense of time and space.

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!

Best cupcakes ever (aside from my wife's)

It's sugar-coated shabbyness. I have been there in wintertime, all the rides and attractions were closed, but it´s still nice to have a walk on the beach or spot some funny looking storefronts and vintage-looking rollercosters. A perfect backdrop for photoshootings, a gem for friends of vintage typography. On 4th of july hot dog eating contests are held here (they actually do that!).