The Ahwahnee Hotel is a grand hotel in Yosemite National Park, California, on the floor of Yosemite Valley, constructed from steel, stone, concrete, wood and glass, which opened in 1927. It is a premiere example of National Park Service rustic architecture and was declared a National Historic Landmark in 1987. The hotel was built by two companies that were merged when the National Park Service began leasing concessions to a single concessionaire in 1925. The Curry Company, owned by David and Jennie Curry and the Yosemite Park Company, the owners of the Yosemite Lodge, became the new "Yosemite Park & Curry Company" headed by Donald Tresidder. The structure originally served as both a luxury hotel and the company offices of YPC&CC. Despite financial struggles, the YPC&CC remained the concessioner for the Ahwahnee Hotel until 1993, before the National Park Service required a new concessioner to buy the YPC&CC, creating a new company, Delaware North. Delaware North's contract ended on March 1, 2016 when The National Park Service selected Aramark as the new concessionaire.