Ciudad Valles is the second-largest city in the Mexican state of San Luis Potosí. It is located in the eastern part of the state (), in the cultural region of Huasteca. The city is also the municipal seat of the surrounding municipality of the same name. The city had a 2014 census population of 176,935. Government Ciudad Valles is a municipality governed by a democratically elected Presidente Municipal (Municipal President) or Mayor for a period of three years. Climate Ciudad Valles has a humid tropical climate. During the summer from April to October, Ciudad Valles experiences high temperatures. The all-time high temperature is along with a consistent humidity. In the winter Ciudad Valles has mild temperatures; a few times a year the thermometer registers less than The all-time low is . Transportation The Pan-American Highway or Interamerican Highway built in the 1930s represents Ciudad Valles' most vital corridor. The Highway leads north to Nuevo Laredo via Monterrey, and to the south to Mexico City. Ciudad Valles connects San Luis Potosí with Tampico. Both cities are politically and economically interrelated with Ciudad Valles. Tourism Ciudad Valles is one of Mexico's most popular destinations for tourists. Micos waterfall These waterfalls are known for their steep falls in the middle of hills surrounded by vegetation. These waterfalls are located from Ciudad Valles and are part of Tampaon river, best known as the Micos River. This name was given due to the abundance of spider monkeys that inhabited this area. This river goes down through a large series of falls with a vertiginous acceleration. Rafting through the rapids of this river is a common activity. At the top of the waterfall there is a scenic viewpoint. Tamasopo Another destination for adventure tourism for the Verastegui Sierra, where the spectacle of the Espinazo del Diablo (Backbone of the Devil) and its ravines which are up to deep can be seen. In this place, access is difficult due to the rough terrain. Tamasopo waterfalls are nearby, a group of three waterfalls that form a waterfall that falls violently into a 5 meter deep well, in whose banks there are beaches. Tamul waterfall From the town of Tanchachín, the Tamul waterfall is about two hours by boat. With a drop, it is the highest waterfall in the state of San Luis Potosí. It is known its height and its crystalline turquoise water. Formed by the waters of