The elegant simplicity of the architecture of the aqueduct of Segovia bears witness to the genius of Roman civil engineers. It is 728m long and 28m high and made up of 158 arches built on two levels and constructed using granite blocks without mortar. It was built in the 1C, probably at the time of Emperor Domitian to transport water from the River Acebeda in the Fuenfria Sierra to the highest part of the town.