Villa Adriana is the most amazing serene place you could ever imagine! You unfortunately have to take a train to the town, two different shuttles which are very inconsistant, but it is worth it! It took five hours just to run around the 40% of the site which was open. Definately take a guide with you so that you know what you are looking at. It is quite a maze to figure out where you are in some spots but that is what makes it so special. When you enter there is an excavation site on your right, go past it and turn right before the modern building and there will be a beautiful path to a building which overlooks Tivoli... so amazing! Bring a bottle of wine, and a sandwhich from the market in tivoli, your camera, and enjoy!!!