We toured the estates and found it to be very interesting. The beautiful trees and flowers were amazing to see. I thought it would be a big deal not being allowed into the houses but we were able to see inside through the plexi-glass doors just fine. We were able to take a lot of pictures. We met two wonderful "docents" Karen and Joe that we found out were from our area in WNY. The $20 was just fine for us...when going to a movie is over $10 these days. You get a "headphone" that you can use at your leisure. There are other options like a guided tour or even a boat trip. We choose to do our own tour which worked out just fine.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.