Explore the world’s premier public display of gardens in this glimmering, colorful jewel of the region. Address US Route 1, PO Box 501 Kennett Square, PA 19348 Get Directions Website Visit Website Phone 610.388.1000 Category Regional Attractions Hours Call or visit the website for details Directions Located on US Route 1, 3 miles NE on Kennett Square, PA; 30 miles W of Philadelphia and 12 miles N of Wilmington. I-95 to Route 322 W to Route 1 South.