Beside the Eresma River near the Alcázar, the Real Casa de Moneda is Segovia's Royal Mint built in the 16th-century, which makes it one of the oldest examples of a commercial building in Spain.
The Royal Mint was founded by Philip II and designed by Juan de Herrera. The building operated as a mint between 1586 and 1869 and now houses two museums: the Mint Museum and the Aqueduct Visitor Center with a multimedia presentation about the town's ancient aqueduct.
The original hydraulic system of the building is still intact, with a dam in the Eresma river
