Grand Canyon
In January 2014 I visited the Grand Canyon for the 4th time! This time I went to the West Rim and walked on the famous Skywalk - a glass platform which extends out over the canyon more than 1200 metres above the canyon floor. Definitely not for those with a fear of heights!! It can be done as a day trip from Las Vegas.
I have also hiked to the bottom of the canyon from the South Rim - a 2 day trip which was an incredible experience although tough going on the way back up to the rim on the 2nd day - a 16.5km hike with an elevation change of over 2000 metres!