This UNESCO World Heritage Site is a natural wonder revered by many. It is one of the most visited national parks in the country and for many good reasons. The colossal canyon has beckoned people to its cutaway gorges for hundreds of years. The almost two billion years of geological history is a landmark whose importance is evident at first sight. Hike the Bright Angel Trail, visit the Grand Canyon Village, raft the winding Colorado River, or take a bike tour—adventurers will not be disappointed. Visit in the spring for comfortable temperatures. Hiking, biking, overnight backpacking, and trips along the canyon rim are all available.