Istanbul at a Glance

Istanbul is Turkey’s largest city and its economic, cultural and historical heart. More than 15 million people live across its 39 districts, making it one of the largest cities in Europe and the Middle East. Ankara is the capital of Turkey, but Istanbul remains the country’s busiest centre for business, culture, tourism and international travel.

The city is divided by the Bosphorus, a narrow strait linking the Black Sea to the Sea of Marmara. The European side holds the historic peninsula and the lively districts around Beyoğlu, while the Asian side is home to large residential neighbourhoods such as Kadıköy and Üsküdar. Ferries, bridges, a road tunnel and the Marmaray rail tunnel connect the two shores every day.

For visitors, the appeal lies in the layers. Byzantine churches stand near Ottoman mosques, nineteenth-century arcades sit beside modern galleries, and traditional tea gardens overlook container ships and ferries. You can see a palace, eat a fish sandwich by the water and cross to another continent in a single afternoon.

The History of Istanbul

Few cities have carried so many names or served so many empires. Each era left buildings you can still visit today.

7th century BCGreek settlers found Byzantion on the shores of the Bosphorus.

330 ADEmperor Constantine makes the city his capital, known as Constantinople.

537Hagia Sophia is completed under Emperor Justinian.

1453Sultan Mehmed II conquers the city, which becomes the Ottoman capital.

16th centuryThe architect Mimar Sinan builds the Süleymaniye Mosque and many other landmarks.

1923The Republic of Turkey is founded and Ankara becomes the capital.

1973–2016Three bridges link Europe and Asia across the Bosphorus.

2018–2019Istanbul Airport opens and takes over scheduled passenger flights from Atatürk Airport.

Historic Istanbul

The layers are easy to read on a walk. The Hippodrome still follows the line of the Byzantine racetrack, the Basilica Cistern stored water for the imperial palace, and Topkapı Palace served the Ottoman sultans for centuries. In the nineteenth century, the city looked west: palaces such as Dolmabahçe rose on the Bosphorus shore, and Pera, today’s Beyoğlu, filled with embassies, arcades and European-style buildings.

Top Sights in Istanbul

A first visit usually combines the historic peninsula, Beyoğlu and time on the water. These landmarks form the core of most itineraries.

Landmarks of Istanbul

Hagia Sophia

Completed in 537, it was a church, a mosque, a museum and is once again a mosque with visitor access.

Blue Mosque

The Sultan Ahmed Mosque, built 1609–1616, famous for its six minarets and İznik tiles.

Topkapı Palace

The Ottoman sultans’ palace, with courtyards, the Harem and the imperial treasury.

Basilica Cistern

A vast Byzantine underground reservoir supported by hundreds of columns.

Grand Bazaar

One of the world’s oldest and largest covered markets, with thousands of shops.

Süleymaniye Mosque

Mimar Sinan’s masterpiece above the Golden Horn, with wide views over the city.

Mosques and domes

Streets and bazaars

Day Trips Beyond the Centre

With a few extra days, it is worth leaving the historic centre to see another side of the region.

Layovers and Stopovers in Istanbul

A long connection can become a short visit to the city. Turkish Airlines runs two separate programmes for international transfer passengers, each with its own rules.

A sample eight-hour layover

If you do not qualify, a layover of eight hours or more is usually enough to reach the historic peninsula by metro or taxi, visit one or two landmarks and return with time for security. Shorter connections are best spent in the airport.

From the Airport to the City Centre

Both airports are some distance from the centre, so plan your arrival in advance, especially late at night or with heavy luggage.

Journey times vary widely with traffic, so allow extra time on the way back to the airport. Use official taxi ranks or app-based bookings, and agree on a pre-booked transfer price in writing before you travel.

When to Visit Istanbul

The city is a year-round destination, but each season feels different.

Autumn, especially October, is a favourite with many visitors: the weather is usually pleasant for sightseeing and the peak summer crowds have eased. Prices and availability depend on events, holidays and demand, so compare options before booking.

Culture and Etiquette

Visitors are warmly welcomed, and a few simple habits help you fit in.

• Dress modestly when visiting mosques
• Remove shoes before entering a mosque
• Avoid visiting mosques during prayer times
• Learn a few words: merhaba, teşekkürler
• Ask before photographing people
• Bargaining is common in bazaars, not in shops

Hospitality is an important part of local culture, and you may be offered tea in shops or homes. A small tip for good service in restaurants is common; check first whether service is already included on the bill.

Travelling With Children or Limited Mobility

The city welcomes families, and children are usually treated with great warmth in restaurants and shops. A few practical points make the trip easier.

• Choose a hotel near a metro or tram stop
• Plan for hills and uneven pavements
• Use ferries as a relaxing break
• Pack a light stroller for crowded areas
• Book a transfer for arrival day
• Allow rest time between sights

Many newer metro stations have lifts, and major museums have improved access in recent years. However, historic districts such as Galata, Cihangir and Balat are steep and often cobbled, and some older buildings have steps without ramps. If mobility is a concern, check access details with each attraction in advance and consider taxis for hilly sections.

Travelling Responsibly

Millions of people live and work in the neighbourhoods visitors love. Respecting daily life helps keep these places welcoming for everyone.

In residential districts such as Balat and Fener, keep noise down and avoid photographing people or private homes without permission. At mosques, follow dress codes and visiting times. Choose licensed guides, tour companies and taxis, and buy crafts from shops that give receipts. Using ferries, trams and the metro instead of private cars also helps reduce congestion in one of the world’s busiest cities.

Finally, be patient. Traffic, crowds and queues are part of life in a large metropolis, and a slower pace often leads to the most memorable moments: a conversation over tea, a view from a ferry deck or an unexpected courtyard behind a busy street.

Istanbul FAQ

Final Thoughts

Istanbul rewards every kind of traveller: history lovers, food lovers, shoppers, photographers and anyone passing through on a long layover. Its position between continents has shaped its past and still makes it one of the world’s great crossroads today.

Plan around the seasons, use the city’s public transport and leave time simply to wander. Travel rules, schedules and prices change over time, so check current information before you go.