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, it remains an active place of worship and a popular tourist attraction. The mosque features a central dome surrounded by four semi-domes, with six minarets and a large courtyard. Inside, it is adorned with thousands of beautiful blue tiles and intricate floral motifs. The mosque's grandeur and exquisite design have made it one of the most iconic landmarks in Istanbul.