Descend below the heart of Istanbul and discover the Basilica Cistern, a hidden underground world of marble columns, rippling waters, and ancient legends.

Built in the 6th century during the Byzantine Empire, this vast subterranean reservoir once supplied water to palaces and public baths. Today, it stuns visitors with its haunting atmosphere: hundreds of marble columns reflecting in the still waters under soft, mysterious light.

With fast-track entry, skip the long queues and step straight inside. On your guided tour, hear the fascinating stories of Byzantine engineering brilliance and learn how the cistern remained vital throughout Ottoman times.

One of the highlights lies at the far end, the mysterious Medusa heads, steeped in myth and legend. Your guide will reveal the secrets behind these iconic sculptures and the symbolism hidden in their unique placement.

This is not just a monument, it’s a journey through centuries of history and imagination. After the guided tour ends, you’re free to stay inside as long as you wish, immersing yourself in the otherworldly beauty of this underground palace.

As an added bonus, receive Basilica Cistern and Blue Mosque audio guides, giving you the freedom to explore one of Istanbul’s most famous landmarks at your own pace.