Istanbul, a city that straddles two continents, is a vibrant blend of history, culture, and modernity. With so much to see and do, a seven-day itinerary will allow you to explore the city's rich heritage and diverse neighborhoods. Here’s a detailed travel plan for your week in Istanbul.

Day 1: Sultanahmet District  
Start your journey in the historic Sultanahmet district. Visit the Hagia Sophia, an architectural masterpiece that has served as a cathedral and mosque. Explore its stunning mosaics and grand dome. Next, head to the Blue Mosque, known for its beautiful blue tiles and impressive minarets. Afterward, explore the Topkapi Palace, the former residence of Ottoman sultans, where you can see the Harem and the impressive treasury. Don’t forget to stroll through the Hippodrome, where ancient chariot races took place. End your day with dinner at a local restaurant serving traditional Turkish cuisine.

Day 2: Grand Bazaar and Spice Bazaar  
Dedicate your second day to shopping and experiencing local markets. Start at the Grand Bazaar, one of the oldest and largest covered markets in the world. Wander through its labyrinthine streets, exploring shops selling everything from jewelry to textiles. After lunch, head to the Spice Bazaar, where the scents of spices, herbs, and Turkish delights fill the air. Sample some local snacks and pick up unique souvenirs. In the evening, consider a traditional Turkish dinner and enjoy a Whirling Dervishes show for a glimpse into the spiritual culture of Turkey.

Day 3: Bosphorus Cruise  
On your third day, take a relaxing Bosphorus cruise. Various operators offer tours that allow you to see the city's skyline from the water, passing by palaces, mansions, and fortresses. Choose a tour that includes stops at notable sites like the Dolmabahçe Palace and Ortaköy Mosque. After the cruise, visit Çamlıca Hill for panoramic views of the city. Enjoy dinner in the Asian side of Istanbul, perhaps in the lively neighborhood of Kadıköy, known for its vibrant dining scene.

Day 4: Taksim and Istiklal Avenue  
Explore the modern side of Istanbul by visiting Taksim Square and Istiklal Avenue. Start your day with breakfast at a local café and then stroll down Istiklal Avenue, lined with shops, restaurants, and historic buildings. Take time to visit the Pera Museum and the Galata Tower for stunning views of the city. In the evening, enjoy the nightlife in this area, with plenty of bars and live music venues to choose from.

Day 5: Princes’ Islands  
Escape the bustling city by taking a ferry to the Princes’ Islands. Büyükada, the largest island, is a great choice for a day trip. Rent a bike or take a horse-drawn carriage to explore the island’s charming streets and beautiful wooden mansions. Enjoy a relaxing lunch by the sea and spend the afternoon swimming or lounging on the beach. Return to Istanbul in the evening and enjoy a quiet dinner.

Day 6: Art and Culture  
Dedicate your sixth day to exploring Istanbul’s art and culture. Visit the Istanbul Modern Art Museum to see contemporary Turkish art. Next, explore the Sakıp Sabancı Museum, which hosts a remarkable collection of calligraphy and Ottoman art. If you're interested in history, don’t miss the Archaeological Museum near Topkapi Palace. In the evening, consider attending a performance at the Süreyya Opera House or a local theater.

Day 7: Relaxation and Reflection  
On your final day, unwind at a traditional Turkish bath (hammam). Enjoy a cleansing and relaxing experience in a historic bathhouse. Afterward, take a leisurely stroll along the Bosphorus waterfront, visiting neighborhoods like Arnavutköy and Beşiktaş. Enjoy a final meal at a rooftop restaurant with views of the river and city skyline. Consider picking up any last-minute souvenirs before departing.

This seven-day itinerary offers a comprehensive experience of Istanbul, blending history, culture, and relaxation. Each day is filled with opportunities to explore the rich tapestry of this incredible city, ensuring you leave with unforgettable memories and a deeper appreciation for its unique charm.