Everywhere you turn, you feel as if you've wandered into a beautiful painting. The gardeners and landscape designers (a good portion of which are volunteer) do an amazing job. The landscape is at times perfectly tailored, and other times it celebrates the beauty of the natural landscape.
Once the country home and personal gardens of Pierre du Pont, the 1050 acres, 20 indoor gardens and 20 outdoor gardens are now beautifully preserved and open to the public. There isn't a time of year that it isn't worth visiting (the holiday displays are amazing), but those tulips put on quite a show!
Find more information, including hours and ticket prices here.