In 1964 the roaring waters of the Colorado River needed to be tamed, so the towering 710-foot-high Glen Canyon Dam was built and nearby Lake Powell created. The 186-miles long lake is the second largest manmade lake in the country and took17 years to fill to capacity.
Today, Lake Powell attracts some 3 million tourists every year. The site has become a popular destination for houseboats and waterskiing because of its placid waters and incredible views. Each marina has its own public picnic area and houseboats are available for rent. Lenient park rules mean visitors can set up camp almost anywhere, too.