This five-story Brooklyn brownstone–packed with pre-war details–is less than 25 yards from the borough’s beloved Prospect Park. Located at 572 1st Street in Park Slope, it’s currently configured as an owner’s triplex with a rental duplex on the top two floors. And it’s huge: the building measures 22 feet wide and 52 feet deep, with 18 feet extensions on two levels. Details include everything from tiled fireplaces to stained glass to enormous mirrors to ornate woodwork. It’s just been listed for the substantial sum of $5.995 million.