Red Rock Canyon National Conservation Area is an incredibly fun and beautiful desert area only 30 minutes from Vegas with mountains, sandstone hills, Native American petroglyphs & pictographs, fault lines, canyons, waterfalls, plenty of hikes, it's a rock climber's paradise, and it features gorgeous lookouts that let one see all the way down to the strip and to the mountains beyond.
At 13 miles (one way only), the drive is short and sweet but should be done at a very leisurely pace with frequent stops where you’re allowed and with lots of hiking and exploring.