Housed in a majestic, landmarked 1881 building with striking terra-cotta details, this museum is devoted to all things Brooklyn. Its priceless collection contains a rare 1770 map of NYC and a signed copy of the Emancipation Proclamation, with regularly rotating exhibits on Brooklyn life. Don't miss peeking into the stunning 2nd-floor Othmer Library, with its original 19th-century balcony of black ash. The lobby gift shop (open noon to 5pm daily) is a fantastic resource for Brooklyn-themed books and upscale gifts.
The society also organizes regular exhibitions and neighborhood walks; check the website for details.