This Sunday, "Good Morning America's" Weekend Window visited the Great Smoky Mountains National Park. Spanning North Carolina and Tennessee, the park extends over half a million acres and has some of the most beautiful vistas and richest history in the country. The Great Smoky Mountains are named for the mist that forms over the mountains after it rains there in the summertime. For more information on the Great Smoky Mountains National Park, visit www.nps.gov/grsm/
On this July 4 weekend, "GMA's" Weekend Window visited historic Philadelphia, home of Independence Hall, where the founding fathers voted that America should become a sovereign nation on July 2, 1776, and where they crafted the Declaration of Independence and the Constitution. Philadelphia was also home to the inventor and diplomat Benjamin Franklin, and Betsy Ross, who sewed the first American flag in May 1776. For more information on historic Philadelphia, visit www.historicphiladelphia.org
This month marks Las Vegas' centennial anniversary. We all know the Strip for its gambling and glitzy night life, but what can you do when the sun comes up? "Good Morning America's" Weekend Window visited the nation's first national recreation area, Lake Mead, where people can boat, swim and camp. For more information on the 1.5-million-acre Lake Mead National Recreation Area, visit www.nps.gov/lame/
"Good Morning America's" Weekend Window visited Yosemite Waterfalls in Yosemite Valley. Yosemite has some of the world's largest waterfalls, and the number of waterfalls varies by year, depending on how wet the season was. As the warmer weather approaches, the snow will melt and send the water down into the valley in the form of waterfalls. This year, the park is also boasting ephemeral falls -- falls that only appear in the spring, which haven't been seen for years. One thing Yosemite's waterfalls promise is that you will never see the same thing twice. For more information on visiting Yosemite National Park, visit http://www.yosemitepark.com/
"Good Morning America's" Weekend Window visited the Arctic National Wildlife Refuge in Alaska, where tens of thousands of caribou are currently making their annual migration to give birth to their calves. The 19 million acres of protected land have an incredible diversity of plants and wildlife -- with 45 species of land and marine mammals, 36 species of fish and 180 identified bird species. The refuge has been in the news with controversy over oil drilling there, and in September, Congress will be taking a landmark vote on whether to open the Arctic Wildlife Refuge up to drilling. Many politicians and those in the oil industry say drilling will avert an energy crisis and can be done in a way that protects animals and the landscape, but conservationists bitterly disagree. For more information on the Artic National Wildlife Refuge, visit http://arctic.fws.gov/.
America's national parks are among the country's most treasured sites, visited by millions of people each year. But beyond the more well-known parks, such as Niagara Falls, Yellowstone and the Grand Canyon, is a lesser known but no-less spectacular park that boasts 2,000 natural sandstone arches, including the world-famous Delicate Arch. "GMA's" Weekend Window looked out on Arches National Park in Moab, Utah. For more information on Arches National Park, visit www.nps.gov/arch.