Combo: Basilica Cistern Tickets + Istanbul Hop-On Hop-Off Bus Tour

- Descend into Basilica Cistern's ancient marvel holding 80,000 cubic meters of water and whispering tales of Roman engineering. - For 1500 years, 336 marble pillars and twin Medusa heads have guarded the Cistern, inviting tourists to unlock the mysteries of its underground oasis. - Zip between 11 key spots on a hop-on hop-off bus tour running every half hour, from the aromatic Spice Bazaar to Hagia Sophia's grandeur. - Let Istanbul's skyline unfold from an open-top deck as you listen to centuries of stories with an audio guide, turning sightseeing into time travel.