The largest water cave of the world is here in Hamedan, a city which is world famous for its abundance of historical attractions. Breathtaking features and natural wonders of Alisadr Cave won’t let you feel the time passing. According to geologists, the stones of this cave belong to 130 to 190 million years ago. The creation of Alisadr Cave is the result of the nature which acted like a professional sculptor, a masterpiece with millions of year’s efforts. What makes Alisadr Cave stand out among others is the easy usage of water channels, they are so vast that normal boats could move through them. It attracts many visitors from all around the world each year. Passing through the cave, you would take pedalos and definitely enjoy the view. The deepest part of the water in this cave is about 14 meter.