Rómulo Pico Adobe, also known as Ranchito Rómulo and Andrés Pico Adobe, was built in 1834 and is the oldest residence in the San Fernando Valley, making it the second oldest residence in Los Angeles. Built and owned by the Pico family of California, a prominent Californio family, the adobe is located in the Mission Hills section of the city and is a short distance from the San Fernando Mission (Mission San Fernando Rey de España). It was listed on the National Register of Historic Places in 1966.