Nemours Estate
For a look at how the uber wealthy lived in the early 20th century, visit Nemours, an estate on 200 acres with impressive gardens and a 47,000-square-foot mansion built for Alfred I. du Pont in 1910 by noted architectural firm Carrère and Hastings, complete with the latest in technology. This modified Louis XVI château showcases more than 30 (of 77 in all) rooms of European and American furnishings, rare rugs, tapestries, and art from different eras. Despite its splendor, the mansion feels homey and personal, and it's fun to explore on your own and ask the pleasant interpretive staff questions. The formal French-style gardens, reminiscent of those at Versailles, are landscaped with fountains, pools, and statuary; garden tours are offered April through October. Vintage cars from Rolls-Royces to Cadillacs are on display in the Chauffeur's Garage. Tickets can be purchased by the parking lot. No food is sold on-site, but picnicking on the lawn is permitted.