The Corridor de las Haciendas (Haciendas Corridor) contains most of the state's 176 former haciendas which were constructed between the 16th and the 19th centuries. Most were devoted to mining or the making of pulque. Many contain the original buildings, including the main residences as well as tours. Many of these are in rural municipalities, which conserve old traditions. In the Apan area, most of the old haciendas were devoted to the making of pulque, which is still made and can be sampled. The area also contains many of the state's former colonial monasteries as well as civic constructions such as the Padre Tembleque Aqueduct.