Philadelphia-based architect Samuel Sloan created this building, also known as Nutt's Folly?
Samuel Sloan (architect) Samuel Sloan (March 7, 1815 – July 19, 1884) was a Philadelphia-based architect and best-selling author of architecture books in the mid-19th century. He specialized in Italianate villas and country houses, churches, and institutional buildings. His most famous building—the octagonal mansion "Longwood" in Natchez, Mississippi—is unfinished; construction was abandoned during the American Civil War.
Logan Square, Philadelphia Logan Square is a neighborhood in Philadelphia. Bounded by Market Street on the south, Spring Garden Street on the north, Broad Street on the east, and the Schuylkill River on the west, it occupies the northwest quadrant of Center City. The square for which it is named is one of the five "squares", or parks, central to William Penn's design for Philadelphia. Originally called Northwest Square, it was renamed in honor of James Logan, an eighteenth-century mayor of Philadelphia.