The nickname of Blue Mosque originated from the blue hue of sunlight coming from its windows. Unless you look up, you will be deceived by the red color of the carpet.
The official name of Blue Mosque of Istanbul is Sultan Ahmed Mosque. It was built by Sultan Ahmed I in 1600s, and serve as place to pray, as well as symbol of power of Ottoman Empire.
The Blue Mosque is still functioning as Mosque today. Men still come to pray 5 times a day, and also for the Friday Prayer.
This post is made in response to WordPress Photo Challenge: Heritage