A glass-bottomed sky pool just opened in Houston -- and it's both terrifying and amazing

@blackforestmom67 / Instagram The INSIDER Summary: A new luxury apartment complex in Houston, Texas, has a rooftop pool. There's a section of the pool that has a glass bottom and extends out over the building. Swimmers can look down and watch the city below as they wadeand swim in the pool. Going for a swim on a rooftop is alwaysfun. But it's even more thrilling when the pool floor is made of glass and extends out over the city below. That's how the new pool at Market Square Tower -- a luxury ap...