"Break a glow stick and put in clear nail polish." DO NOT DO THIS HOLY CRAP! There are some toxic chemicals in glow sticks that have not been tested on nails. They make glow in the dark polish that is safe, just buy some.
Texas: A natural swimming pool in downtown Austin - Barton Springs Pool. The pool exists in the channel of Barton Creek and is filled by water from Main Barton Spring, the fourth largest spring in Texas.
Hamilton Pool, a swimming hole set in a grotto with a waterfall cascading down, seems too beautiful to be real. The natural pool, located just outside of Austin, was created when the dome of an underground river collapsed.