Kucuk Ayasofia Camii (Church of the Saints Sergius and Bacchus) Tours and Tickets

Istanbul has a history of Christianity dating back to 312 AD and ancient Constantinople was once an important religious center. Discover the city's rich Christian heritage on this private full-day tour, and visit magnificent Byzantine monuments such as the Panagia Blachernae church, the St. Savour-in-Chora monastery, and the sacred church of Zoodohu Pege.

Discover the vibrant meeting point of East and West on this small-group 3.5-hour tour of Istanbul and see traces of its Roman, Byzantine and Ottoman legacy. Learn about the church and mosque of Hagia Sophia, marvel over the ambitious Suleymaniye Mosque and lose yourself in the labyrinth of the Grand Bazaar, a shopper's paradise for almost 600 years.

Visit Istanbul's headline acts and discover the city's rich heritage on this full-day tour of UNESCO-listed Sultanahmet, the historic heart of the city. Explore the legendary Hagia Sophia, which dates back to 537AD; learn how the 17th-century Blue Mosque received its famous nickname; and see the many monuments of the Hippodrome. You'll also get chance to revel in the opulence of the Ottoman era at the grand Topkapi Palace and lose yourself in the maze-like Grand Bazaar.