The Crosswire Estate is a large residence owned by the Crosswire family. It is located in the southeastern part of Elwood City. The most prominent feature is the mansion, which is commonly known as Muffy's House. Together, the house and the yard occupy an area of 16,000 square feet. The mansion is lavender and yellow with a turquoise roof (shingles had a darker tone in earlier seasons), brown front doors, and a balcony above the front doors.