 They may be protected by railings to protect the public or be enhanced by a viewing tower designed to elevate visitors above the surrounding terrain or trees in order to offer panoramic views.Overlooks are frequently found in national parks, and in the U.S. along national parkways such as the Blue Ridge Parkway, which has numerous individually named overlooks for viewing the Blue Ridge Mountains and its valleys.Other overlooks are next to waterfalls, especially since mountain roads tend to follow streams.