"Things move on, time passes, people go away, and has added a photo to the pool: Address: 49 Prospect Park West, between 1st and 2nd Street Name: Originally the Henry Hulbert Mansion, now Poly Prep Lower School Neighborhood: Park Slope Year Built: 1889 Architectural Style: Romanesque Revival Architect: Montrose W. Morris, new addition by Platt Byard Dovell White (2005) Landmarked: Yes, Park Slope Historic District It’s actually two houses. The right side, where all of the …