Park Slope's brownstone duplexes represent the best of Brooklyn residential architecture — and the parlor-floor duplex is the crown jewel. This fully restored example preserves everything that makes 19th-century brownstones great: 11-ft ornamental ceilings, original plasterwork, pocket doors, and triple street-facing windows that flood the living room with afternoon light. The private rear garden adds a rare outdoor element. Excellent school district, steps from Prospect Park and 7th Avenue shopping.