Michael T.
Yelp
This probably one of the best outdoor and/or family activities around Las Vegas that doesn't involve gambling or casinos! The Red Rock Canyon Visitor Center is at the beginning of a one-way loop road (that you can't repeat) which goes through the beautiful and awe-inspiring Red Rock Canyon National Conservation Area.
You will need to make reservations before you go, so make sure that you plan ahead. Because they will always sell out and space is limited! The reservation website they have is pretty good, and you can pay your fee ahead of time online.
The Visitor Center itself is new, very clean, modern, and has many interesting exhibits about the local wildlife and area history to view, both inside and ouside. You can get information about the park and the different hikes that are available, which span all different skill levels from ones that kids can do, all the way to pretty extreme advanced trails. (They also have Junior Ranger badges here.)
As for the Red Rock Canyon loop drive itself, the best spot is probably at the beginning, near the first main parking area. There is a giantic group of banded red rock boulders the size of hills which have some caves, crevasses, and other interesting features to explore. There are trails leading in all directions and it is all worth checking out if you have the time. The rest of the drive is very scenic and beautiful, and has many hiking opportunities and places to explore as well.
National Conservation Areas like this one are a bit different than National Parks in that they are sometimes less well-developed and not as well-known, but they are no less awesome. Turns out there are 873 federally recognized National Conservation areas, encompassing approximately 32 million acres, primarily across 12 western states. They are run by the Bureau of Land Management, not the National Park Service.
Five stars as a must visit!