Carl Hagenbeck--David Hancocks

While it is generally accepted that Carl Hagenbeck, above, revolutionized zoo exhibit design worldwide with his moated tier park in Hamburg, I think we are remiss if we do not give David Hancocks, below, the same credit for re-revolutionizing and taking to another level, zoo exhibit design worldwide, starting with the gorilla habitat at Seattle's Woodland Park Zoo in 1979, and inspiring N.C. Zoo' Watani Grasslands, Bronx's Tropic World, as well as every major zoo exhibit for the past 30 years.