Choose one of our excellent tour options tailored to your needs and interests: 2-hour: Old City Visit the Grand Bazaar and see the highlights of Istanbul's Old City, including the Sultanahmet Square, Hagia Sophia (outside) and Topkapi Palace (outside) 3-hour: Old City & Blue Mosque Visit the Blue Mosque and Grand Bazaar, and see the highlights of Istanbul's Old City, including the Sultanahmet Square, Hagia Sophia (outside) and Topkapi Palace (outside) 4-hour: Old City, Blue Mosque & Hagia Sophia Visit the Hagia Sophia Mosque, the Blue Mosque and Grand Bazaar, and see the highlights of Istanbul's Old City, including the Sultanahmet Square and Topkapi Palace (outside) 6-hour: Old City, Blue Mosque, Hagia Sophia & Topkapi Palace Visit the Topkapi Palace Museum, the Hagia Sophia Mosque, the Blue Mosque and Grand Bazaar, and see the highlights of Istanbul's Old City, including the Sultanahmet Square.