Hop onboard the Tunel, the second-oldest underground urban train in the world. Running between Karakoy and Tunel Square, the funicular has been running since 1875. Its purpose was to allow traders and merchants to get up and down the steep hill faster. Now it shuttles locals and tourists.
Tilt your head back and prepare to be captivated by the dazzling building known as the Sultan Ahmed Mosque or the Blue Mosque. The walls are covered with more than 20,000 hand-painted blue tiles that catch the natural light at the perfect moment from more than 200 windows.