It used to be the location of "The Istanbul" and Jackie Chan's movie "The Secret Service". I see the sisters who are also playing here. High This is one of the most romantic and mysterious spots in Istanbul. In this huge underground palace built from 300 large stone columns, there is a mysterious tear column with a tree streak and a peacock eye. Legends will bring good luck to people. Just draw your thumb into the hole and draw a circle to achieve your wish. There are two stone pillars that are particularly interesting to tourists, one is the "Medusa Head". In Greek mythology, the beauty of the snake, Medusa, represents evil. The blue devil eyes in Turkey and Greece are said to be Medusa's eyes. The arrangement of the two Medusa heads is not the same, one head down and one side face down. Pressed by a huge stone column at the bottom of the underground palace. Bless the city forever from the evil forces.