Venustiano Carranza is one of the 16 delegaciones (boroughs) of Mexico's Federal District. The borough was formed in 1970 when the center of Mexico City was subdivided into four boroughs. Venustiano Carranza extends from the far eastern portion of the historic center of Mexico City eastward to the Peñón de los Baños and the border dividing the Federal District from the State of Mexico. Historically, most of the territory was under Lake Texcoco, but over the colonial period into the 20th century, the lake dried up and today the area is completely urbanized.