Avila Adobe is the oldest house in Los Angeles, California, built in 1818. It is a historic adobe structure that showcases the architectural style of early California. The house features thick adobe walls, a central courtyard, and traditional Spanish design elements. Today, Avila Adobe is part of El Pueblo de Los Angeles Historical Monument and serves as a museum. Visitors can explore the interior, which is furnished to reflect life in the 19th century. The site offers insights into the early history of the region and the cultural influences that shaped it.