City Walls of Constantinople Tour is a private, licensed-guide Istanbul tour for your group only — about 4–6 hours, planned one-to-one around your hotel, pace and interests. Pricing is from €180 per group, charged in EUR with no marketplace markup. It includes Licensed English-speaking guide, Lunch in a traditional rice restaurant and Drop-off to hotel. You book directly with TourThese, a TÜRSAB-licensed agency (#18704): share your dates and group size on WhatsApp for a quote — no card needed to request — with free cancellation up to 24 hours before.