This is the world’s largest pool that comes from a natural spring. This means there are larger pools in the world but this one is natural. This pool was built around the natural spring in the 1930s. It was a project so people would have jobs at that time. I learned that no chlorine is needed to keep germs out because 15 million gallons of fresh water come up into the pool every day. The pool is 3 feet I. The shallow part and 25 feet deep in the deepest part. The water is always between 72 degrees and 76 degrees.