Ceiling of Nasir al-mulk mosque

The Pink Mosque, or Nasir al-mulk Mosque, is an historical site located in Shiraz, Iran. What makes it unique is the intricate mosaic work, the beautiful colored lights coming in through the stained glass windows and its dominant red color.
Only in the late Autumn and early Winter, when the sun is lower in the sky, does one have access to the intense, broad spectrum light inside the mosque. Also, this mosque is open to the public during scheduled times, and group of visitors frequently come and crowd the space.