Drive to Hoover Dam in the morning, sightsee this largest and tallest concrete structure of it’s time. Visit the dam and overlook North America's largest artificial lake - Lake Mead. Then, travel to one of the most famous 7 natural wonders in the world - the Grand Canyon! Over eons, the Colorado River and erosion have sculpted this amazing landscape. Here is the world's most vivid erosion model, which is why the Grand Canyon has not only become a textbook for the geologist and paleontologist, but also made the millions of tourists each year filled with emotion when they face the masterpiece of creator. You may watch the IMAX movie of the history of Grand Canyon at the entrance at your own cost. Then, go to the largest view point near visitor center - Mather Point. If God is the creator of the Grand Canyon, Colorado River is an artist who has carved the Grand Canyon. After the summer thunderstorm, the color of the Colorado River and the canyon mix together, thus differences can only be told by the spray stirred up from the turbulence. When it snows in the early winter, the dark green of the river no longer rapids, instead, slowly meandering through the valleys. Despite the passion in summer and the cold in winter, the river and valley’s history of romance has been going on for six hundred million years long. Sunshine and clouds are always alternating controls over the canyon, adding a dash of style to the magnificent scenic picture. The group will return to Las Vegas in the evening.