Istanbul is a beautiful city with so much to see and do. Here's an ideal itinerary for 8 days in Istanbul:

Day 1: Arrival and Relaxation

Upon arrival, check into your hotel and take some time to relax and unwind. You can explore the local area around your hotel, grab some delicious Turkish food, and get a good night's sleep.

Day 2: Old City Tour

Start your day by visiting the iconic Hagia Sophia, which was once a church, then a mosque, and now a museum. Next, head over to the Blue Mosque, which is famous for its blue tiles and six minarets. After that, visit the Topkapi Palace, which was the residence of Ottoman sultans for centuries. End your day with a stroll through the Grand Bazaar, where you can shop for souvenirs and traditional Turkish goods.

Day 3: Bosphorus Cruise

Take a relaxing cruise along the Bosphorus Strait, which separates Europe and Asia. You'll get to see stunning views of the city from the water, including the Dolmabahce Palace, the Rumeli Fortress, and the Bosphorus Bridge. After the cruise, visit the Spice Bazaar, where you can buy spices, sweets, and other local delicacies.

Day 4: Princes' Islands

Escape the hustle and bustle of the city and take a ferry to the Princes' Islands. These islands are car-free, so you can rent a bike or take a horse-drawn carriage to explore. Visit the historic monasteries and churches, enjoy a picnic on the beach, or simply relax and take in the beautiful scenery.

Day 5: Modern Istanbul

Explore the modern side of Istanbul by visiting Taksim Square, which is the heart of the city's nightlife and shopping scene. Take a walk down Istiklal Street, which is lined with shops, cafes, and restaurants. Visit the Istanbul Modern Art Museum, which showcases contemporary Turkish art.

Day 6: Asian Side

Cross over to the Asian side of Istanbul and explore the Kadikoy neighborhood. This area is known for its vibrant street markets, trendy cafes, and delicious food. Visit the Moda neighborhood, which has a beautiful park overlooking the sea. Take a ferry back to the European side in the evening and enjoy dinner at one of the many seafood restaurants along the Bosphorus.

Day 7: Ottoman Architecture

Visit the Suleymaniye Mosque, which was built by the famous Ottoman architect Sinan. Next, visit the Rustem Pasha Mosque, which is known for its beautiful Iznik tiles. End your day by visiting the Chora Church, which is famous for its stunning Byzantine mosaics and frescoes.

Day 8: Departure

On your last day, take some time to relax and reflect on your trip. You can visit a traditional Turkish bath, have a final meal of delicious Turkish cuisine, and say goodbye to this beautiful city before heading to the airport.

I hope this itinerary helps you plan your trip to Istanbul!