The Sultan Ahmed Mosque (Commonly called the Blue Mosque) is one of the largest and most picturesque of the mosques in Istanbul, Turkey. It was built in the 7 year period from 1609-1616 during the rule of Ahmed I.
There are visiting hours daily and while there is no entrance fee, donations are requested upon exiting. There is a strict dress code and rules are strictly enforced. Be respectful and enjoy the beauty and extraordinary reverence of this magnificent building.
Happy and Safe Travels!