The Sultan Hassan mosque-madrasa was built using huge stone blocks. Due to its impressive size, the mosque has come to symbolize the architectural supremacy that developed during the century of Mamluk regency. In front of the impressive mosque your eyes will immediately be drawn towards the blue sky. When you lower your eyes instead you will find yourself in front of the astonishing spectacle of a magnificent mosaic-paved courtyard, an unprecedented specimen in all of Cairo.