I visited Monticello on a day trip from Washington, D.C. It took a little more than two hours to reach the site by car and another two to get back but it was definitely worth it. The tour of his house and the surrounding areas really gives you a view of Thomas Jefferson's mind. The house is filled with priceless antiques and old books. My only complaint is that the tour sizes are way too big for such a small place; I found myself having to squeeze through people in order to view everything in the many rooms. I did not have time (and the interest) to visit the University of Virginia so I cannot comment on that but Monticello is definitely worth a visit.