Ayers Saint Gross’ master plan for the Henry Francis du Pont estate with its 175-room mansion and nearly 60 acres of planned gardens, relies on minimal new construction. This strategy preserves the site’s historic character and minimizes construction and maintenance costs. Visitors will arrive at the existing village adjacent to Kennett Pike, where they will find parking, tickets, and other essential services. They then board a tram to ride to the Museum Core, which is the central Winterthur experience. The existing dairy barn will be renovated into a spectacular venue with nearby parking and adjacent gardens, and the Learning Center will occupy the existing parking lot. The latter precinct is designed so that it can grow as Winterthur’s programs grow. New structures will be compatible with and embody the spirit of the estate. Flexibility and adaptation are also central to the plan. The result will inspire, delight, and educate the site’s 175,000 annual visitors.