Best Things to Do in Istanbul: A Local Operator's Shortlist

The best things to do in Istanbul are the historic peninsula of Sultanahmet (Hagia Sophia, the Blue Mosque, Topkapi Palace and the Basilica Cistern), a boat trip on the Bosphorus, the Grand Bazaar and Spice Bazaar, and an evening on the Asian side in Kadıköy. With three days you can see all of them without rushing, as long as you group them by neighbourhood instead of criss-crossing the city.

Below is the shortlist we give our own guests, in the order that makes sense on the ground, with honest notes on queues, closing days and where a guide genuinely helps.

1. Hagia Sophia

Built in the sixth century as a church, converted to a mosque in 1453, a museum for most of the twentieth century and a mosque again since 2020, Hagia Sophia is the single building that explains Istanbul. The dome still feels impossible when you stand under it.

As of 2026, foreign visitors enter through a separate visitor route to the upper galleries and pay an entrance fee, while the ground floor is reserved for worship. The building closes to visitors around prayer times and for longer at Friday midday prayers. Dress modestly: covered shoulders and knees for everyone, and a headscarf for women. Go at opening time or late afternoon; the middle of the day is the busiest.

2. The Blue Mosque (Sultan Ahmed Mosque)

Directly opposite Hagia Sophia, the Blue Mosque is an active mosque that welcomes visitors outside prayer times and does not charge for entry. The name comes from the İznik tiles inside. Expect a short queue at the visitors' entrance, shoes off, and the same dress rules as Hagia Sophia. Fifteen to thirty minutes inside is enough for most people.

3. Topkapi Palace

For almost four centuries this was the seat of the Ottoman sultans. Allow at least two to three hours: the courtyards, the Treasury, the Sacred Relics room and the terraces over the Bosphorus are the highlights, and the Harem is a separate ticket that is worth it if you have the time. Topkapi is closed on Tuesdays, which catches out a lot of visitors.

4. The Basilica Cistern

An underground Byzantine water reservoir held up by 336 columns, including the two famous Medusa heads. It is cool, atmospheric and close to Hagia Sophia, so it fits naturally into the same morning. Queues build from late morning; going early or with a pre-booked ticket helps.

If you want these four sights done in one well-paced day with someone who handles the tickets and the timing around prayers, our private full-day Istanbul tour from Hagia Sophia to the Grand Bazaar is built exactly for that.

5. The Grand Bazaar and the Spice Bazaar

The Grand Bazaar is one of the oldest covered markets in the world, with thousands of shops across dozens of lanes. Treat it as a walk first and a shopping trip second. Haggling is normal for carpets, lamps and leather, less so for small fixed-price items. It is closed on Sundays.

Walk downhill from there through the busy streets of Mahmutpaşa to the Spice Bazaar (Mısır Çarşısı) near Eminönü. It is smaller and easier to enjoy, and the small mosque next door, Rüstem Pasha, has some of the finest tilework in the city with far fewer visitors.

6. A Bosphorus cruise

Istanbul makes most sense from the water. The Bosphorus strait separates Europe and Asia, and a boat trip takes you past Dolmabahçe Palace, the Ortaköy Mosque, the Rumeli Fortress, wooden waterside mansions and both continents' shorelines.

You have three realistic options: the public ferries (cheap, functional, with no commentary), a shared sightseeing cruise with a guide, or a private boat. A Bosphorus sightseeing cruise with a local guide is the easy middle ground: about two hours, with someone explaining what you are looking at. Late afternoon into sunset is the best light.

7. Galata and Karaköy

Cross the Galata Bridge from Eminönü (watch the fishermen on the upper deck) and walk up to the Galata Tower. The view from the top is good, but the queue is often long; the surrounding streets of Galata and Karaköy, full of cafés, galleries and small restaurants, are just as rewarding. From here İstiklal Avenue leads up to Taksim Square.

8. Kadıköy and the Asian side

Most visitors never cross to Asia, which is a mistake. A twenty-minute public ferry from Eminönü or Karaköy brings you to Kadıköy, a lively local neighbourhood with a superb food market, meyhanes (taverns) and the seaside promenade of Moda. It is the best evening in the city for many of our guests, and the ferry crossing at dusk is a sightseeing trip in itself.

9. Süleymaniye Mosque

Built by the architect Mimar Sinan for Süleyman the Magnificent, Süleymaniye sits on one of the city's hills with views over the Golden Horn. It is calmer than the Blue Mosque and, for many people, more beautiful. The surrounding streets have traditional bean-stew restaurants that have fed students and traders for generations.

10. Chora (Kariye) and Balat

If you have a fourth day, head to the Golden Horn districts of Fener and Balat for colourful houses, Greek and Armenian churches and old neighbourhood life. The nearby Chora (Kariye) has world-class Byzantine mosaics; it reopened as a mosque in 2024, so check current visiting arrangements before you go.

How to group these sights

If you only have one day, our Old City day tour with a sunset Bosphorus cruise combines the peninsula's main sights with the water, which is the most efficient single day in Istanbul.

Practical tips

• Get an Istanbulkart. The rechargeable travel card works on trams, metro, ferries and buses and is far cheaper than single tickets.
• Check closing days. Topkapi closes on Tuesdays and the bazaars on Sundays. Mosques close to visitors during prayers.
• Start early. The big Sultanahmet sights are calmest in the first hour after opening.
• Wear good shoes. Istanbul is hilly and the old town is cobbled.
• Carry a scarf. It solves every mosque dress code in seconds.

FAQ

How many days do you need in Istanbul?

Three full days cover the main sights comfortably: one for Sultanahmet, one for the bazaars and the Bosphorus, and one for Galata and the Asian side. Four or five days let you add Balat, the Princes' Islands or a slower pace.

Is Hagia Sophia free to visit?

Not for foreign tourists. As of 2026 foreign visitors pay an entrance fee and use a dedicated route to the upper galleries; prices change, so check the current fee before you go.

What is closed on which day in Istanbul?

Topkapi Palace is closed on Tuesdays and the Grand Bazaar on Sundays. Mosques stay open daily but close to visitors during prayer times, longest at Friday midday.

Is a guide worth it in Istanbul?

For Sultanahmet, usually yes: a guide handles tickets and timing around prayers and turns layers of Byzantine and Ottoman history into a story. For Galata, Kadıköy and the ferries, exploring on your own works well.