Situated on the bank of the Bosphorus Strait is one of Istanbul's landmarks, the Blue Mosque. It features a magnificent and eye-catching, enormous round dome. The Blue Mosque, also called the Sultan Ahmed Mosque, was built under the rule of Sultan Ahmed during the Ottoman Empire. The Blue Mosque derives its name from the more than 20,000 blue ceramic tiles used to decorate its interior. These exquisite blue ceramic tiles are one of the mosque's highlights. The tiles are engraved with rich patterns and Arabic inscriptions, which are the perfect embodiment of the unique features of Islamic art.