Istanbul's must-see list, in the order a first-timer actually walks it
Sultanahmet holds four of these within a five-minute walk of each other, which is why the first day belongs there and the second crosses the Golden Horn. Walk them in this order and the prayer closures and the box-office cut-offs fall into place.
1. Hagia Sophia
Fifteen centuries as cathedral, mosque, museum and mosque again. Since 2024 the visitor route is the upper gallery, reached by the ramp, while the ground floor stays in use for prayer; the Deesis mosaic and the Empress Zoe panel are both upstairs. Foreign visitors pay €25 and Müzekart is not accepted.
It opens at 09:00 and closes at 20:00, but the box office shuts at 19:00 — arrive after that and there is no ticket to buy at any price. Fast-track costs ₺300 on top. Full detail on the Hagia Sophia page and the ticket routes on Hagia Sophia tickets.
2. The Blue Mosque
Sultan Ahmed I's mosque, the one with six minarets, faces the Hagia Sophia across a garden. It is a working mosque: entry is free, there is no ticket to buy, and visiting halts around each of the five daily prayers whose times Diyanet publishes for Istanbul every day. Shoulders and knees covered, shoes off at the door, headscarf for women, and bags of shoes carried rather than left. The Blue Mosque page has the timing tactics; the rules for every mosque are on mosque etiquette.
3. Topkapı Palace
The Ottoman court for four centuries, and the one big sight the Ministry of Culture does not run — it belongs to Millî Saraylar, the presidential palaces authority. The combined ticket for the palace, the Harem and Hagia Irene is ₺2,750 for foreign visitors; the Harem alone is ₺1,050. No Ministry pass and no Müzekart works here.
Plan on half a day: the Treasury and the Harem are the parts people wish they had left time for. Topkapı Palace, tickets on Topkapı tickets.
4. The Basilica Cistern
The sixth-century underground reservoir with the two Medusa heads. It is also the one sight this guide cannot price: the cistern passed from the İstanbul Metropolitan Municipality to the General Directorate of Foundations, closed to visitors on 2 June 2026, and returned to paid entry on 8 June, with no tariff published on any official page we could reach. Buy at the door or through a listing that states its own price. What is known, and when it changes.
5. The Grand Bazaar and the Spice Bazaar
Four thousand shops under vaults, free to walk, closed on Sundays and on religious holidays — a Sunday arrival should not plan around it. The Spice Bazaar, ten minutes downhill by Eminönü, is smaller, louder and more geared to visitors; the produce stalls in the streets behind it are where the city actually shops. The Grand Bazaar and the Spice Bazaar.
6. Süleymaniye Mosque
Sinan's masterpiece on the third hill, bigger and calmer than the Blue Mosque, with a terrace over the Golden Horn that most tour groups skip. Free, and subject to the same prayer-time pauses. Süleymaniye.
7. Galata Tower
The Genoese watchtower over Beyoğlu, and at €30 the most expensive Ministry ticket in the city — more than the Hagia Sophia. If you hold a Museum Pass you must be through the door by 18:14, a cut-off the pass prints itself. Whether the view is worth it against a free rooftop is argued out on the Galata Tower page.
8. A boat up the Bosphorus
Not optional. The palaces, the fortresses and the wooden yalı houses were built to be seen from the water. A public ferry costs one İstanbulkart ride at ₺46.20; a cruise sells commentary, a fixed route and a seat.
Both are compared on the Bosphorus page.