The Blue Mosque, officially known as the Sultan Ahmed Mosque, is a stunning Ottoman-era mosque located in Istanbul, Turkey. Built between 1609 and 1617 during the reign of Sultan Ahmed I, it features a central dome surrounded by four semi-domes, six minarets, and thousands of beautiful blue tiles that give it its name. Despite facing initial opposition due to its cost and location, the mosque became a beloved landmark in the city and remains a popular tourist attraction today. Its grandeur and intricate design make it a must-visit destination for anyone exploring Istanbul's rich history and culture.