http://www.authorstream.com/Presentation/CachiChien-2108921-aljafer-zaragoza-espa/

4. ALJAFERÍA PALACE
The Aljafería Palace is unique in its historical context as the
largest surviving example of Islamic/Spanish architecture
from the Taifas period. With in the Aljafería Palace can be
found Mudejar architecture. During the Renaissance the
Palace was expanded (in 1492) by Ferdinand and Isabel.
One tower of the Aljafería predates the Palace, the
Troubadour Tower, it was constructed in the 9th century AD.
The Taifas period Palace (build for the Banu Hud) was
started in the late 11th century. It was constructed more for
the residential enjoyment of the Taifas than as a defensive
structure. With the fall of Zaragoza to Alfonso I in 1118 AD
the Palace became the home of the (Christian) Kings of
Aragon.
Other notables to use the Palace as a Royal residence, are
Peter IV of Aragon (1319 -87 AD) and the Catholic Monarchs,
Ferdinand and Isabel. Alterations to the Palace were
conducted as the function of the building changed. By 1593
is was being converted in to a military base. For a time the
Palace was even used as a hospital. Recognizing the
historic value of the the Aljafería Palace, restoration of the
structure started in the 1947 by Francisco Iñiguez. Since
1987 the Palace has been the headquarters for Aragon's
regional parliament.