As you step inside, the reason for the nickname Blue Mosque becomes instantly clear. You are surrounded by more than 20,000 handmade ceramic tiles from the town of Iznik. These are not just simple decorations; they are a floral paradise captured in clay. Look closely and you will find over 50 different tulip designs, alongside cypress trees, roses, and fruits. In the upper levels, the sunlight streaming through 260 stained glass windows hits the blue paint and tiles, creating an ethereal, underwater glow that can feel truly transcendent. Historically, the quality of these tiles was so important that the Sultan forbade the Iznik workshops from producing tiles for any other project until his mosque was finished. Notice how the light softens the massive elephant foot pillars that support the main dome, which reaches a height of 43 meters.