Monte Castro is a western barrio (neighborhood) in Buenos Aires, Argentina, belonging to the 10th comuna (district). Its borders are: Alvarez Jonte Ave., Lope de Vega Ave., Juan Agustín García St., Joaquín V. González St., Baigorria St., and Irigoyen St.It is located in one of the highest zones in the city and is currently a middle-income neighborhood.