Discover the Basilica Cistern under the streets of Istanbul on a guided tour. Be amazed by the stunning architecture of the cistern during the tour and gaze at the Medusa Heads. Skip-the-line and avoid the long queue, as you follow your guide through history. Meet your guide in front of the exit gate of the Basilica Cistern and enter together. Skip the long lines and enjoy a highlights tour and learn interesting facts about the water cistern with an audio guide. Marvel at the engineering of the cistern while hearing the history with a downloadable audio guide. After your guided tour, stay and explore the building at your own pace. 

Visit the Basilica Cistern, built in the 4th century and enlarged in 532 AD, used as water storage during Byzantine times. Listen to your guide as they explain the mystery of Medusa heads from Greek mythology. Explore this cathedral-size cistern, built during the reign of Emperor Justinian I in 532 A.D. to supply water to the Great Palace. It stores up to 80,000 cubic meters of water, delivered via 20 kilometers of aqueducts from a reservoir near the Black Sea. Descend the fifty-two stone steps into the entrance of the cistern. The cistern is surrounded by a firebrick wall with a thickness of 4 meters, coated with a waterproofing mortar. Hear how the Basilica Cistern's water comes from the Eğrikapı Water Distribution Center in the Belgrade Forest and travels through the 971-meter-long Valens Aqueduct and the 115-meter-long Mağlova Aqueduct, built by the Emperor Justinian.

Be free to visit the Basilica Cistern, Topkapi Palace, and Hagia Sophia at any time for three consecutive days. Skip the ticket lines and browse through the fascinating museums at your own pace. Uncover the secrets of each location with the help of an informative audioguide. You can choose to visit all 3 museums in 1 day, or the three of them separately on different days. Once inside the museums, get tips on how to discover the museums in the best way. Afterward, you can stroll through the museums at your own pace as you listen to your audio guide app and explore for as long as you like. If you have any questions about the Hagia Sophia, the Topkapi Palace, the Cisterna Basilica, or Istanbul in general, please do not hesitate to ask your English-speaking tour guide.

Join a guided tour to discover Topkapi Palace, Hagia Sophia, and the Basilica Cistern in Istanbul. Benefit from priority admission at the museum ticket offices to skip the long lines and head in faster. Meet your guide in the Sultanahmet neighborhood at an easy spot and check out Istanbul's greatest monuments on a walking tour. Start with the Basilica Cistern, wander around the “Subterranean Palace” and learn about its history. See the underground pillars and learn about Byzantine architecture. Walk on the wooden walkways over the water until the famous upside-down Medusa heads. Next, visit the Hagia Sophia and witness the most significant site of the Greek Orthodox religion in Istanbul and learn how it was converted into a mosque after the Ottoman conquest of Constantinople. Explore the stunning monument with elements of a mosque and a church standing next to each other. Admire the basilica’s stunning dome and minarets, and countless mosaics, paintings, and Roman columns. Learn how the impressive İznik tiles were added over time in the Mosque, how the stunning Virgin Mary mosaic was made, and why the Ottomans chose to bury their sultans in the courtyard. Continue to Topkapi Palace to explore the splendor of the Ottoman Empire. Discover the complex of buildings, pavilions, and courtyards was a self-contained city, which most inhabitants rarely left. Explore the outer-terraced gardens and admire the view over the Golden Horn. Visit the Harem, ruled by the Queen Mother who wielded domestic and political power. The harem housed hundreds of women and family members as well as hundreds of eunuchs, who performed a wide range of duties. Admire cupboard doors inlaid with mother of pearl and tortoiseshell and stunning Iznik tiles with verses from the Quran. The tour ends with a visit to the holy relics and the imperial kitchens.