After The most important cathedral on this planet, the Hagia Sophia is taken into account the magnum opus of Byzantine architecture. Guests say It's really a need to-see when in Istanbul and advise taking a guided tour For more info in regards to the background of the website. There's also https://istanbul-wp35678.newbigblog.com/43293551/how-wordpress-kursu-istanbul-can-save-you-time-stress-and-money