Istanbul is the only major city built across two continents, and that is not a tourism slogan — it is the organising fact of the place. The Bosphorus separates Europe from Asia through the middle of a metropolis of roughly 16 million people, and the strait is not a barrier but the main street. Ferries cross it constantly, commuters live on one side and work on the other, and the best way to understand the city is to spend a couple of hours on the water.
The historic core is small and dense, the modern city is enormous, and most visitors never leave the first. That is a mistake, though an understandable one.
Three empires, one skyline
The city was founded as Byzantion around 660 BC, refounded by Constantine in 330 AD as the new capital of the Roman Empire, and was the seat of the Byzantine Empire for over a thousand years. It fell to the Ottomans in 1453 and became their capital until the Turkish Republic moved the seat of government to Ankara in 1923.
That sequence is legible on the ground. Roman walls and cisterns underneath, Byzantine churches converted to mosques, Ottoman imperial complexes on the hills, and nineteenth-century European-style boulevards in Beyoğlu where the embassies were. Very few cities let you read their history this directly from the street.
Getting in from the airport
- Istanbul Airport (IST) — 40 km northwest on the European side, and one of the largest terminals in the world. The M11 metro connects to the wider network; the Havaist bus runs to Taksim and Sultanahmet in 60 to 90 minutes depending on traffic. A taxi runs roughly TRY 900 to 1,400 and can take well over an hour in congestion.
- Sabiha Gökçen (SAW) — 45 km southeast on the Asian side, used heavily by low-cost carriers. The M4 metro plus a transfer, or the Havabus to Kadıköy and Taksim. Reaching Sultanahmet from here takes 90 minutes to two hours.
Istanbul traffic is genuinely severe and the distances are large, so a fixed-price pre-booked transfer removes both the meter anxiety and the taxi-refusal problem, which visitors do encounter here. Our Istanbul airport transfer guide compares the options in detail.
The Sultanahmet cluster
Almost everything on a first-timer list sits within a fifteen-minute walk in the old city, which is convenient and also why it is crowded from mid-morning.
- Hagia Sophia — built in 537 under Justinian, and for nearly a thousand years the largest cathedral in the world. Now a working mosque with a paid visitor entrance for non-worshippers, around EUR 25. The dome is the reason to go and photographs consistently fail to convey it.
- The Blue Mosque (Sultan Ahmed Mosque) — free, active, and closed to visitors during the five daily prayers. The blue İznik tiles that give it the nickname are in the upper galleries.
- Topkapı Palace — the Ottoman court for four centuries. Around TRY 1,500 including the Harem, which is worth the supplement. Allow three hours.
- The Basilica Cistern — a sixth-century underground water reservoir with 336 columns, two of them resting on Medusa heads. Atmospheric, cool, and around TRY 1,300.
- The Grand Bazaar — free to enter, roughly 4,000 shops, and one of the oldest covered markets in the world.
- The Spice Bazaar and Süleymaniye Mosque — both free, both a short walk downhill.
Here is what is currently bookable in Istanbul and roughly what it costs:
The Bosphorus, which is the point
If you do one thing in Istanbul that is not in Sultanahmet, take a public ferry. Not a tour boat — the ordinary commuter ferries operated by Şehir Hatları cost a couple of lira with an Istanbulkart and carry you past palaces, fortresses and wooden waterfront mansions.
- Eminönü to Kadıköy — twenty minutes to the Asian side, and the single best value experience in the city.
- Karaköy to Kadıköy — the commuter route, with tea sold on board.
- The long Bosphorus cruise — a 90-minute public sailing up to Anadolu Kavağı near the Black Sea, with a stop for lunch.
- Princes’ Islands — an hour out into the Sea of Marmara, car-free, and a completely different pace.
Kadıköy on the Asian side deserves an afternoon of its own — a food market, bars, bookshops, and almost no tour groups.
Beyoğlu and the modern city
- İstiklal Caddesi — a pedestrian boulevard about 1.4 km long with a historic red tram running down it, connecting Taksim Square to the Galata district.
- Galata Tower — a fourteenth-century Genoese tower with a paid viewing gallery and long queues. The view from the surrounding rooftop cafés is nearly as good and costs the price of a coffee.
- Karaköy — the old port district, now full of galleries and coffee.
- Balat and Fener — the historic Greek and Jewish quarters along the Golden Horn, with steep coloured streets and the Chora Church nearby, whose Byzantine mosaics are among the finest anywhere.
- Ortaköy and Bebek — waterfront neighbourhoods under the first Bosphorus bridge.
A four-day shape
- Day 1 — Sultanahmet. Hagia Sophia at opening, Blue Mosque, Basilica Cistern, then Topkapı in the afternoon.
- Day 2 — bazaars and the Golden Horn. Grand Bazaar, Süleymaniye, Spice Bazaar, then a ferry up the Golden Horn to Balat and the Chora Church.
- Day 3 — the Asian side. Ferry to Kadıköy, the market, lunch, then Moda and back at sunset.
- Day 4 — Beyoğlu and the Bosphorus. Galata, İstiklal, then the long Bosphorus ferry in the afternoon.
With two days: Sultanahmet on one, a Bosphorus ferry and Kadıköy on the other. Do not spend both days in the old city.
Eating
- Breakfast (kahvaltı) is a major event — a table covered in small plates of cheese, olives, eggs, jams and bread. Van Kahvaltı Evi in Cihangir and the breakfast streets of Beşiktaş are where to do it.
- Balık ekmek — grilled fish in bread from the boats at Eminönü, cheap and excellent.
- Meyhane — the traditional tavern, with meze, rakı and long evenings. Nevizade in Beyoğlu and the streets around Kadıköy market.
- Çay — tea, served constantly, in tulip glasses, and usually free if you are looking at carpets.
- Avoid restaurants with touts in Sultanahmet. Walk ten minutes for half the price and better food.
Where to stay
- Sultanahmet — walking distance to the main sights, quiet at night, limited food options.
- Beyoğlu, Galata and Cihangir — the best balance of atmosphere, restaurants and transport.
- Karaköy — waterfront, design hotels, ferries to everywhere.
- Beşiktaş — local, lively, good value, and a ferry hub.
- Kadıköy — Asian side, cheapest, most local, and a 20-minute ferry from the old city.
Compare Istanbul accommodation. Rates are low by European standards but the lira is volatile, so book in a currency you understand and check whether the rate is guaranteed.
When to go
April, May, September and October are the best months — mild, clear and comfortable for the amount of walking involved. Summer is hot and humid with heavy crowds. Winter is grey and can be genuinely cold and wet, but the city is quiet and hotel rates fall sharply.
Ramadan changes the rhythm of the city considerably. Mosques are busier, some restaurants adjust hours, and the evening meal after sunset is a spectacle in the squares around Sultanahmet.
Practical notes
- Get an Istanbulkart immediately. It covers metro, tram, bus, funicular and the ferries, and fares are a fraction of the cash price.
- Mosque etiquette — shoes off, shoulders and knees covered, women cover their hair. Scarves are usually available at the entrance. Avoid visiting during prayer times.
- Haggling is expected in the bazaars and not in shops with marked prices. Start well below and stay friendly.
- Taxi problems — refusing short fares and not running the meter are both common. Use BiTaksi or Uber, which dispatches licensed taxis.
- Carpet and restaurant touts in Sultanahmet are persistent. A polite no and continuing to walk works fine.
- Connectivity. Turkey is outside EU roaming, so a Turkish eSIM matters more here than in most of Europe. See our best eSIM for Turkey guide.
Related reading
Prices are indicative for 2026 and the Turkish lira moves quickly. Some links on this page are affiliate links; using them costs you nothing and helps keep this site running.
