Extending from the Main Ring lay the beam lines of the Experimental Areas for the fixed target experiments. Through the power poles designed personally by Wilson, he intended "the power to come in" and, from the switchyard, "the protons to go out." Wilson proposed interesting architecture, including his own ideas, to enhance the open landscape covering what he thought would be temporary laboratories. The curved and colorful roof of inverted culvert marks the Meson Lab. The Neutrino Lab, home of the 15-foot bubble chamber, is capped by its bright geodesic dome. A pagoda sits atop the Proton Lab Area with a tower of distinctive geometric design enclosing a double helix stairway. Physicists from all over the world submitted proposals in 1970 for the first experiments using the frontier accelerator. The beam lines were ready in 1972.