If you’re afraid of heights you may want to avoid this swimming pool. The Sky Pool is on the 42nd floor of a luxury apartment building in Houston, Texas. It has a glass bottom so you feel like you’re walking and swimming in mid-air…500 feet above the street! Residents pay $1,805 per month for a tiny studio apartment, $18,715 per month for the penthouse. Take a look at this video of a daring resident walking across the 8-inch thick plexiglass bottom! For folks with vertigo there’s another more traditional pool on the fourth-floor terrace.