Converted from a single-family brownstone mansion, this Park Slope duplex still has much of its historic detailing on display–even in the bathroom. The home is located at 120 Prospect Park West, a stretch that faces Prospect Park and is known for impressive architecture built for wealthy Brooklynites. The modern-day asking price is $2.3 million for two levels of the building, one of which is the parlor floor, about 2,000 square feet awash in wood carvings and stained glass.

You’ll want to see the bathroom