The Mezquita del Cristo de la Luz (Mosque of Christ of the Light) is a fascinating little former mosque in a park above the northern ramparts of Toledo, Spain. Dating from the late 10th century, it is the only surviving mosque out of the ten that once stood throughout Toledo.Built over the site of a Visigothic church, the Mezquita is one of the oldest Moorish monuments in Spain. An Arabic inscription on the facade tells us that it was constructed by one Musa Ibn Ali in 999 AD (390 AH).
Despite its dimunitive size, this mosque was very important in the Islamic era, due both to its location in a wealthy quarter and its proximity to the Alcazaba, an elevated fortress that stood on the site of the Alcazar.
The apse at the back was added after its conversion to a church in the 12th century and is a fine example of Mudejar architecture (and quite possibly the earliest anywhere).