The expansion of the park into Jackson Hole brought a requirement for new facilities at the new park gateway at Moose. The Mission 66 program was conceived in 1955 to deal with the dramatic increase in visitation, particularly automobile-borne tourism, being experienced Park Service-wide. The Moose Visitor Center, a new administration building, and employee residences were built at Moose, just downstream from Menor's Ferry, where a bridge crossed the Snake River. At about the same time the Colter Bay Village complex was developed on Jackson Lake in the northern part of the park, providing camping, lodging and marina services. The largest development of this era was the new Jackson Lake Lodge, a reinterpretation of the traditional Park Service lodge concept in a modern style by architect Gilbert Stanley Underwood. Underwood, who had designed the rustic Bryce Canyon and Grand Canyon lodges as well as Yosemite's Ahwahnee Hotel, made a sharp break from the naturalistic rustic style, using concrete and steel and straight, sharp lines while he incorporated traditionally rustic colors and textures, framing a view of Mount Moran from the main lobby. The Jackson Lake Lodge was designated a National Historic Landmark in 2003.