Hagia Sophia, located in Istanbul, Turkey, is one of the world’s most remarkable architectural masterpieces. Originally built in 537 AD as a Byzantine cathedral by Emperor Justinian I, it later became a mosque under the Ottoman Empire, then a museum in the 20th century, and once again a mosque in 2020. Its massive dome, stunning mosaics, and unique blend of Byzantine and Ottoman styles make it a symbol of cultural and religious history. Today, Hagia Sophia continues to inspire millions of visitors from around the globe.

The Basilica Cistern, built by Byzantine Emperor Justinian in the 6th century, is a vast underground water reservoir that once supplied the Great Palace and surrounding buildings in Constantinople. Measuring about 140 by 70 meters, it covers nearly 10,000 square meters and could store around 100,000 tons of water. Inside, 336 marble columns, many reused from earlier Roman structures, rise from shallow water and create the atmospheric setting that inspired the nickname “Sunken Palace.” The famous Medusa Heads and the “Weeping Column” add a touch of myth and mystery, making the cistern one of Istanbul’s most evocative historic sites.

The Sultanahmet hippodrome is located at the heart of Istanbul’s historic peninsula, is renowned for its dense concentration of iconic landmarks that reflect the city’s rich Byzantine and Ottoman heritage. As the core of the Old City, it is home to monumental sites such as the Hagia Sophia, the Blue Mosque and the Hippodrome, all positioned within walking distance of one another. The area’s narrow streets, traditional architecture, and archaeological remains illustrate centuries of cultural transformation. Today, Sultanahmet serves as both a major tourism hub and a living historical landscape, offering visitors a direct encounter with Istanbul’s layered past.

Located in the heart of Istanbul’s historic peninsula, the Blue Mosque (Sultanahmet Camii) is one of the city’s most iconic landmarks, famous for its striking blue İznik tiles, elegant domes, and six slender minarets. Built in the early 17th century, it continues to function as both a place of worship and a cultural treasure, welcoming visitors from all around the world. Step inside to admire its vast prayer hall, intricate calligraphy, and the harmony of Ottoman architecture that stands directly opposite the Hagia Sophia, offering travelers a timeless glimpse into Istanbul’s rich heritage.

The Grand Bazaar (Kapalıçarşı) is one of the world’s oldest and largest covered markets, a vibrant maze of more than 4,000 shops spread across dozens of streets in Istanbul’s historic center. Dating back to the 15th century, it offers visitors a unique chance to experience the atmosphere of Ottoman-era trade, with stalls selling everything from handmade carpets, jewelry, and antiques to colorful ceramics, textiles, and spices. Beyond shopping, the bazaar is a cultural experience in itself, filled with bustling energy, traditional tea houses, and centuries of history woven into its walls.