I think it takes place every Saturday morning to afternoon, vintage shopping while having a great view at the Manhattan skyline from the East River State park. You will find lots of vintage shops and warehouses around this area of Williamsburg.
Offering 20% off on current “indie bestsellers” (and 10% off picks from their well-read staff), you can still get a good deal while supporting one of the city’s last independent bookstores. They also carry an impressive selection of magazines and literary journals that you can flip through in their café. McNally’s event calendar is packed with appearances and readings by authors like Zadie Smith and Chris Kraus, but they're perhaps best known for their in-store printing press and self-publishing services.
I’m a big fan of libraries (tons of books, free to take out, I mean what’s not to love?) and even though you can’t actually take out any books at the big beautiful library in Midtown – it’s still worth a visit. I love walking around in the big halls, the architecture is so beautiful and there’s always small exhibitions or things to see. Don’t forget to look up when entering the main reading-hall. Feels like book-heaven!
My second-favorite outdoor-place in Manhattan. The abandoned 1.6 km rail tracks running above Chelsea down to the Meatpacking district were turned into an above-ground park. Perfectly nice place for sitting in the sun, reading, relaxing, having lunch in some green spot in the city. Nice views at the Hudson River, New Jersey, the Statue of Liberty (little small from there but still visible) and the architecture around Chelsea.