Inside America's 22nd Largest House | Grey Towers Castle

In 1893, a Philadelphia sugar magnate handed a 23-year-old, largely self-taught architect his first great commission and asked for a castle. Five years and roughly 250,000 dollars later, Grey Towers rose out of the Pennsylvania countryside in Glenside, three stories of grey Chestnut Hill stone trimmed in pale Indiana limestone, with six towers, a full crown of crenellations, and more than fifty c …