The Segovia Aqueduct, an exceptional work of Roman hydraulic engineering, is one of the most emblematic and recognised archaeological gems in Spain.

Made of large granite ashlars laid ‘a hueso’ (without mortar), it was built to supply water to Segovia.

The water flowed through the canal at the top, supplying cisterns and public fountains.

Beginning of the 2nd century AD (rule of Emperor Trajan).

Total length, from its source in the Sierra de Guadarrama: 16,186 m.
 

Archway: 959 m. 
Maximum height: 28.10 m. 
Total number of arches: 167. 
 

Its trajectory under the pavement to the Alcázar is documented from medieval times.

The quality of the water was ensured by decanting, eliminating elements in drag and suspension, thanks to the pits of the sand traps, a system which can be seen today in the Casita de Piedra or Desarenador de Chamberí (1B), metres above the start of the arcade, and in the Desarenador de San Gabriel (1A), at the beginning of the structure, neither of which is completely Roman in origin.

The Aqueduct as a symbol appears on the flag of Segovia and on its coat of arms, and was the mintmark on coins minted in Segovia (1 BC).