Erie Basin is a really wonderful little shop full of old, creepy and beautiful things, such as Victorian mourning jewelry (some with hair in it), Freemason masks from the 1900's, tiny children's rings from the 1700's, and all kinds of other treasures. It is really as much a museum as it is a store, and all of the items have a haunting and unique aura.
I often run to this place and I love this perspective on glittering Manhattan and the feeling of coolness in the air from being so close to the water. To sweat and breathe and see this view of New York gives me a sense of being in this great City.
In a landscape of clubs that all play virtually the same EDM or hip hop music, The Pyramid Club is unique in its choice of soundtrack. Every Thursday, Friday, and Saturday, The Pyramid is open from 8pm-4am for an 80s Dance Party on their main floor that is totally punk rock. Downstairs on the lower level, they switch it up with themes ranging from “Back to the 90s” to “Let’s Dance David Bowie.” It’s also way kinder to your budget than most clubs—the drink specials are pretty much the best you can do in New York.
An awesome, and sometimes free, ferry that links Manhattan at the Financial District to Ikea in Brooklyn via Red Hook. Very great views of the city and if you end up having to pay it's redeemable for a monetary discount towards an Ikea purchase. I think of it as a treat and an investment.