Travelers explore the mysterious underground world of the Basilica Cistern, one of Istanbul’s most fascinating historical landmarks. With their QR ticket, visitors can enter easily and walk among the forest of ancient marble columns while discovering the unique atmosphere created by the dim lighting and reflections on the water. During this self-guided visit, guests can admire the famous Medusa head columns, learn about the cistern’s Byzantine history, and experience one of the city’s most iconic architectural treasures at their own pace.