This picture was taken in the Agha Bozorg Mosque in Kashan, which is one of the most beautiful in Iran, built in the late 18th century. The mosque is famous for its symmetric pattern, the colorful tiles and the theological school. Typical for the Persian architecture is the central courtyard in the middle of the mosque.
Compared to the mosques beauty which can be seen from outside the woman on the picture has to hide her beauty. According to islamic rules every women has to wear a a full body hijab in a religious places.
Agha Bozorg Mosque in Kashan