I finally got to see Seven Magic Mountains this past December 2017!
If you're in Vegas, you must check out this mesmerizing art installation that was created by Swiss artist Ugo Rondinone. Seven Magic Mountains is located near Jean Dry Lake--- it's about a 30 minutes drive from the Strip (10 miles south of Vegas). The contrast of the bright, fluorescent colored rocks against the tan desert background is quite awe inspiring and makes for a great photo op spot!
It's free and only here until May 2018, so come visit before it disappears!