Villa Hortensia is a mansion in the city of Rosario, province of Santa Fe, Argentina. It is located on 1917 Warnes St. in Barrio Alberdi, in the north-eastern part of Rosario. It was built in 1890 by architect Boyd Walker for José Nicolás Puccio, founder of Alberdi. It was then sold to Ciro Echesortu, and then in turn to Alfredo Rouillon, married to María Hortensia Echesortu (from whom the house got its name).