Everyone goes to brooklyn bridge park but williamsburg waterfront is honestly better. Domino park has unobstructed views of midtown and empire state, plus the old sugar factory is cool architecture.

East river state park right next door, usually empty except smorgasburg weekends. You can walk the whole waterfront from north 7th to grand without fighting tourists for photo spots.

L train to bedford ave, walk 10 minutes toward water. Best at sunset obviously but even midday the views are incredible.