I think it is important to experience the history of this place. Very thought-provoking and invokes wrenching emotions. The visitor center has great displays and a compelling documentary in their theater. Walking the site gives you a better impression, but a lot of the beauty has been lost (the gardens and parks). What cannot be taken away is the amazing views of the mountains on either side. The walk is easy - this is not as much about a hike as it is experiencing history.