The city known for the historic Blue Mosque is Istanbul, Turkey. Officially named the Sultan Ahmed Mosque, the Blue Mosque was completed in 1616 and is celebrated for its stunning architecture and intricate blue tiles. It stands as a significant example of Ottoman architecture and attracts millions of visitors yearly. The mosque features a large central dome, six minarets, and an expansive courtyard, making it a prominent landmark in Istanbul. The Blue Mosque is not only a popular tourist destination but also an active place of worship.