I had a beautiful visit to the Biltmore Estate in Asheville, NC recently. Finished in 1896, the estate served as a vacation and retreat home for the Vanderbilt family. A stroll through the gardens alone can take a full day. Tickets are good for two days, so you can return the next day and see the estate house. Try to visit the home in the off season due to high volume of traffic, but the gardens are a must see in full bloom.