Mission El Descanso (Spanish: Misión El Descanso), originally Misión San Miguel la Nueva, was a Spanish mission located in what is now Playas de Rosarito Municipality, Baja California. It was the founded by the Dominican missionary Tomás de Ahumada in 1810 in an area long inhabited by the Kumeyaay people. The mission was the penultimate Dominican mission to be founded and the only mission to be founded in what was then the short-lived Spanish province of Baja California. It is also the northernmost mission in what is now Mexico. Today, only stone foundations and ruined adobe walls survive.