The seven man-made wonders of the United States include the Brooklyn Bridge, the Golden Gate Bridge, the Empire State Building, the Seattle Space Needle and Hoover Dam. The seven natural wonders include the Grand Canyon, Mount McKinley, Niagara Falls, the Bay of Fundy and Everglades National Park.
The seven man-made wonders of the United States include both the Brooklyn and Golden Gate bridges, engineering feats for their time. The former, built in the 1800s, is considered a national historic landmark and a work of art. The latter, finished in 1937, received many architectural awards. The Hoover Dam, also a national historic landmark, holds back the Colorado River. It reaches up to 726 feet in height with a maximum width of 660 feet and a length of 1,244 feet.
The Empire State Building and the Seattle Space Needle make the top seven list as two of the tallest buildings at one time. The Washington Monument and Mount Rushmore, built in 1884 and 1941 respectively, required building ingenuity.
The seven natural wonders of the world include Yellowstone National Park, with its geothermal geysers and wildlife, and Yosemite National Park, with massive granite cliffs and waterfalls. The Grand Canyon, the largest in the world, also makes the list along with Mount McKinley, which is the highest peak in North America. Niagara Falls on the Canada and U.S. border is one of the largest waterfalls in the country.
The Redwood National Forest features acres of redwood trees. The Everglades National Park features over 1 million acres of subtropical wetlands. The Bay of Fundy, located in Maine, boasts the highest tides in the world.