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.
For a lovely Weekend to Connecticut - Grace Farms is a non-profit center in New Canaan, Connecticut that is dedicated to advancing faith, nature, arts, community and justice initiatives.
Apart from Dia Beacon, in Beacon (upstate New York about an hour away from Grand Central Station) and also the Judd Foundation in Soho, this institution is absolutely one of my favourite places to visit and it is located in Long Island City, Queens. It showcases sculpture in the broadest sense and has an incredible building that used to be a workshop that refurbished and fixed subway cars. It has been running since 1928 and when you visit you will definitely see why that is.
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!