Istanbul is one of the few cities where churches, mosques, and synagogues have lived together for many years. It was the capital of the Byzantine and Ottoman Empires, so it has many important places of worship and a rich culture. Today, many historic churches are open to visitors. Some still have religious services, and some are important places to visit because of their history and design. If you want to learn about Byzantine history or see more than just mosques, these churches are great places to visit. If you plan to visit many attractions, the Istanbul E-pass can help you enter many popular places more easily.
Historic Churches in Istanbul Worth Visiting
Here are some of the most important historic churches in Istanbul. Each one shows a different part of the city’s religious and cultural history.
Hagia Sophia
Hagia Sophia is one of the most famous places in Istanbul. It was built in 537 AD by Emperor Justinian I. It was the main church of the Byzantine Empire for about 1,000 years. After the Ottomans took the city in 1453, it became a mosque, and it is still a mosque today. Hagia Sophia is famous for its large dome, beautiful columns, and old mosaics. It is one of the most visited places in Istanbul and very important for history.
Why visit?
- One of the most important Byzantine buildings
- UNESCO World Heritage Site
- Shows both Christian and Islamic history
Location: Ayasofya Meydanı No:1, Sultanahmet, Fatih, Istanbul
Church of St. George and the Ecumenical Patriarchate
The Church of St. George is in the Fener area. It has been the center of the Ecumenical Patriarchate since the 1600s. It is still an important place for Greek Orthodox Christians. Inside the church, you can see beautiful icons, religious objects, and decorations. Even though it looks simple from outside, it is very important for many people.
Why visit?
- Important center for Orthodox Christianity
- Home of the Ecumenical Patriarchate
- Many religious objects inside
Location: Sadrazam Ali Paşa Caddesi No:35, Fener, Fatih, Istanbul
Bulgarian St. Stephen Church (Iron Church)
St. Stephen Church is near the Golden Horn. It is also called the Iron Church because it was made from iron parts. These parts were made in Vienna and brought to Istanbul in the 1800s. The church was built for the Bulgarian Orthodox community. It was restored and now looks very beautiful with white walls and colorful windows. It is one of the most photographed churches in the city.
Why visit?
- Made from iron, very unique
- Beautiful location by the water
- Interesting design
Location: Balat Mahallesi, Mürselpaşa Caddesi No:10, Fatih, Istanbul
Church of St. Mary of the Mongols (Saint Mary of the Mongols)
This church is in Fener, on a hill. It is the only Byzantine church in Istanbul that has always stayed a church, even after the Ottoman period. It is connected to Maria Palaiologina, a Byzantine princess who married a Mongol ruler. The church is small but very special and peaceful.
Why visit?
- Only Byzantine church never changed into a mosque
- Quiet and calm place
- Important for history
Location: Tevkii Cafer Mektebi Sokak No:22, Fener, Fatih, Istanbul
St. Anthony of Padua Church
This church is on Istiklal Street in Beyoglu. It is the largest Catholic church in Istanbul. It was built in the early 1900s. The church has red bricks, large windows, and a beautiful design. It is still active and has regular services.
Why visit?
- Largest Catholic church in the city
- Beautiful design
- Easy to visit while walking on Istiklal Street
Location: İstiklal Caddesi No:171, Beyoğlu, Istanbul
Holy Trinity Church
Holy Trinity Church is close to Taksim Square. It is one of the biggest Greek Orthodox churches from the late Ottoman period. It has large domes and two towers. Inside, it is decorated in a traditional style. It is still active and a quiet place to visit.
Why visit?
- Beautiful Orthodox design
- Close to Taksim
- Active church
Location: Katip Çelebi Mahallesi, Meşelik Sokak No:15, Beyoğlu, Istanbul
Chora Church (Kariye)
Chora Church is smaller than Hagia Sophia but very famous for its art. It has amazing mosaics and wall paintings that show stories from the life of Jesus and Mary. It is very important for art and history lovers.
Why visit?
- Beautiful mosaics and paintings
- Important for Byzantine art
- Great for people who love history
Location: Derviş Ali Mahallesi, Kariye Camii Sokak No:18, Fatih, Istanbul
Little Hagia Sophia (Church of Saints Sergius and Bacchus)
Located a short walk from Sultanahmet, Little Hagia Sophia is one of the oldest surviving Byzantine churches in Istanbul. Built in the 6th century during the reign of Emperor Justinian I, it is believed to have inspired the design of the later Hagia Sophia. After the Ottoman conquest, the church was converted into a mosque, but its elegant architecture still reflects its Byzantine origins. Compared to Hagia Sophia, it is much quieter, making it a good stop for travelers who want to explore lesser-known historical landmarks.
Why visit?
- One of Istanbul's oldest Byzantine churches
- Early example of Byzantine architecture
- Easy to combine with a visit to Sultanahmet
Location: Küçük Ayasofya, Küçük Ayasofya Camii Sokagi No:20, 34122 Fatih/İstanbul
Where to Find Historic Churches in Istanbul
Many historic churches are in areas where Christian communities lived in the past. Fener and Balat are the best places to see Orthodox churches and Byzantine history. You can visit several churches close to each other. Beyoglu and Taksim have St. Anthony of Padua Church and Holy Trinity Church. You can visit them while exploring Istiklal Street and Taksim Square. Sultanahmet is the historic center of the city. Hagia Sophia is here and attracts many visitors.
Tips for Visiting Churches in Istanbul
Most churches are open to visitors, but they are also places of worship. It is important to be respectful.
Before your visit:
- Wear modest clothes
- Speak quietly
- Do not disturb people who are praying
- Some places may not allow photos
- Check opening hours before you go
- Visit in the morning or on weekdays for fewer crowds
You can visit churches together with other nearby attractions in one day.
Explore More of Istanbul with Istanbul E-pass
Historic churches show the rich and mixed culture of Istanbul. They help you understand how different religions lived together in the city. If you want to see more places like palaces, museums, and famous attractions, you can use the Istanbul E-pass to make your trip easier and more enjoyable. Istanbul is considered one of those cities which are the capital of culture and arts. There are many churches in Istanbul with a different histories. Do visit historical churches in Istanbul; you will be amazed by their past and stories.