Discover the Hagia Sophia, a UNESCO World Heritage Site, with priority access and an optional audio guide. Once the world’s largest cathedral, it was built by Emperor Justinian I in the 6th century and later transformed into a mosque after the Ottoman conquest. Converted into a museum in the 20th century and back into a mosque in 2020, Hagia Sophia showcases a unique blend of Byzantine and Islamic architecture. The audio guide provides insights into its rich history and remarkable design. -- Important Info --• Opening hours: every day from 9 am to 7.30 pm • Modest attire is required. Women must cover their hair and shoulders; men and women must cover their knees • All guests must undergo a mandatory security check, which may involve a wait • The local operator will send you an email with your entry ticket after booking • If you select the Ticket with Audio Guide option, you'll also receive the activation link for the audio guide as soon as your booking is confirmed *Remember to bring: Headphones for the audio guide• The audio guide is compatible with iOS and Android devices and available in German, English, Spanish, French, Italian, and Romanian