Los Angeles has a wide variety of historic resources and the Los Angeles Conservancy works to preserve these resources so the community can continue to learn and grow with an eye to the past. The goal of the conservancy is to raise awareness in the resources, build the economy, and strengthen the communities throughout the area. The Conservancy has a rich list of accomplishments which includes saving and restoring area landmarks like the Wiltern Theatre, the Cathedral of St. Vibiana, the Wilshire May Company Building, Frank Lloyd Wright's Ennis House, the Cinerama Dome, and the world's oldest McDonald's. When the Conservancy becomes aware of action that needs to be taken in order to preserve a piece of Los Angeles history, they work with public officials, property owners, community developers and others who have a stake in the destruction or revitalization of a project. Among their other supporters are community associations, neighborhoods, heritage organizations and historical preservation groups. The Conservancy also provides educational programs to area residents and visitors. One of their most popular projects is the architectural walking tour series which has been in action for more than three decades. The Conservancy relies on the helps of volunteers who help organize and run the variety of education and restoration programs.