If you only have half a day to spend in Brooklyn, spend it here. DUMBO and Brooklyn Heights sit side by side on the East River, directly across from Lower Manhattan, and between them they offer cobblestone streets, converted warehouses, some of the best pizza in the city, leafy blocks of 19th-century brownstones and a waterfront view of the skyline that never gets old.
This is the route we'd take on a free afternoon: arrive in DUMBO, graze and wander, stroll south through Brooklyn Bridge Park, climb up into Brooklyn Heights for the Promenade, and then walk back to Manhattan over the Brooklyn Bridge just as the city lights come on.