The Faisal Mosque is the work of famous Turkish architect, Vedat Dalokay who won the Agha Khan Architectural Award with this project. Update, see comment below. Faisal Mosque has not won the Aga Khan Award for Architecture The mosque’s relatively unusual design fuses contemporary lines with the more traditional look of an Arab Bedouin’s tent, with its large triangular prayer hall and four minarets. However, unlike traditional masjid design, it lacks a dome. The minarets borrow their design from Turkish tradition and are thin and pencil like. The interior of this prayer hall holds a very large chandelier and its walls are decorated with mosaics and calligraphy by the famous Pakistani artist Sadequain
http://www.flickr.com/photos/szain/3936779498/in/pool-39804613888@N01
Ismailimail 
Our readers have advised that Faisal Mosque never won the Aga Khan Award for Architecture. There is no reference to such information at Aga Khan Award for Architecture website. Above mentioned post is being corrected reflecting the available information.
The ArchNet link with additional information is mentioned below.
http://www.archnet.org/library/sites/one-site.jsp?site_id=864
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