2023.05.01 Iran icon time 13:30, the second stop of the "Exploring the Iranian Miracle Travel of the Persian Empire" team to Kashan is to watch the Persian bathroom in the ancient city. The interior decoration here even uses turquoise. The walls are layered with milk, egg whites, soy powder i and lime, which is said to be stronger than cement! To better lighting, the top of the bathroom is specially designed with a convex lens, which acts as lighting and ventilation. Standing on the roof of the old bathhouse, looking around, the raised round light windows, like being thrown into another planetary world.