Topkapi Palace is one of the most iconic landmarks of Istanbul and one of the most visited historical sites in Türkiye. Built in the 15th century by Sultan Mehmed II (Mehmed the Conqueror), it served as the primary residence of the Ottoman sultans and the administrative center of the empire for nearly 400 years. Located on the historic peninsula of Istanbul, overlooking the Marmara Sea, the Bosphorus, and the Golden Horn, the palace is a UNESCO World Heritage Site and offers visitors a deep insight into Ottoman history, art, and daily life.

The Blue Mosque (officially known as the Sultan Ahmed Mosque) is one of Istanbul’s most iconic landmarks and a masterpiece of Ottoman architecture. Built between 1609 and 1616 during the rule of Sultan Ahmed I, it is famous for its six minarets, grand domes, and stunning blue İznik tiles that adorn its interior — giving the mosque its popular name. The Blue Mosque is still an active place of worship, meaning visitors can enjoy both its historical significance and its spiritual atmosphere.

The Hagia Sophia Grand Mosque (Turkish: Ayasofya-i Kebir Cami-i Şerifi) is one of the most significant monuments in world history and a symbol of Istanbul. Originally built in 537 CE by Byzantine Emperor Justinian I, Hagia Sophia was the largest cathedral in the Christian world for nearly 1,000 years and a masterpiece of Byzantine architecture. After the Ottoman conquest of Constantinople in 1453, it was converted into a mosque by Sultan Mehmed II (Mehmed the Conqueror). In 1935, it was turned into a museum, and in 2020 it was reconverted into a functioning mosque, while still welcoming visitors from around the globe.

The Basilica Cistern (Turkish: Yerebatan Sarnıcı) is one of Istanbul’s most fascinating historical landmarks and a true hidden gem beneath the city streets. Built in the 6th century during the reign of Byzantine Emperor Justinian I, this massive underground water reservoir once supplied water to the Great Palace of Constantinople and nearby buildings. Today, it is a popular tourist attraction offering visitors a unique, atmospheric glimpse into the city’s Byzantine past.

The Grand Bazaar (Turkish: Kapalıçarşı) is one of the largest and oldest covered markets in the world, located in the heart of Istanbul. Established in the 15th century by Sultan Mehmed II, it has been the commercial hub of the city for centuries and remains one of Istanbul’s top tourist attractions. Today, the bazaar is a lively labyrinth of shops, colors, and aromas — an essential stop for anyone wanting to experience the city’s vibrant culture.

The Sultanahmet District is the historical heart of Istanbul and home to many of the city’s most famous landmarks. Often referred to as the Old City, this UNESCO World Heritage-listed area is where Byzantine Constantinople and Ottoman Istanbul come to life. Sultanahmet is the perfect place to experience Istanbul’s rich history, culture, and architecture — all within walking distance.Hippodrome of Constantinople: The ancient chariot-racing arena, featuring monuments like the Serpent Column and the Obelisk of Theodosius.