Esteban de Gormaz: Castle of Gormaz
This Moslem, Calif-style fortress was built
in the 10th century to defend the lands of the Duero from Christian
attacks during the Reconquest. Divided into two areas by a moat:
the fortress and the walled enclosure where the soldiers and the
cisterns were. In the fortress there were seven towers out of
which the Almanzor and the Keep are the most interesting. It also
had an underground reservoir and an important armoury. This castle
is mentioned in the "Cantar de Mío Cid". El Cid Campeador
was mayor of the fortress once taken by the Christians. It is
the longest fortification in Europe.
Source: Web server of Instituto de Turismo de España, TURESPAÑA.