10 - The Gateway Arch: Located in St. Louis, Mo., The Gateway Arch, or the Gateway to the West, is 630 ft. tall and 630 ft. wide. It was completed in 1965. Visitors can take a tram to to top for a spectacular view of the Mississippi river and southern Illinois.
9 - Niagara Falls: Straddling the border between Ontario and New York, this massive waterfall can move 6 million cubic feet of water per minute during high flow. As well as being a popular tourist attraction, the falls provide hydroelectric power. The riverflow generates about 4.4 million kilowatts of electricity.
8 - The Hoover Dam: The dam is located on the Colorado River, between the states of Arizona and Nevada. At the time of its construction in 1936, it was the world's largest hydroelectric power station.
7 - Mount Rushmore: This massive sculpture by Gutzon Borglum depicts former presidents George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln and hosts nearly 3 million visitors every year. The monument was intended to represent the first 150 years of American history.
6 - The Hollywood Sign: Located on Los Angeles's Hollywood Hills, these 45-foot tall white letters were created in 1923 as an advertisement for a housing development called Hollywoodland, but were left up. The last four letters were eventually removed. Publisher Hugh Hefner recently made news by donating $900,000 toward the purchase of land behind the sign.
5 - The Golden Gate Bridge: This massive suspension bridge, opened in 1937, connects the San Francisco peninsula with Marin County to the north. The bridge is internationally recognized as a symbol of San Francisco and California.
4 - The National Mall: This open-area park in downtown Washington D.C. hosts 24 million visitors per year and contains many well known buildings, including the Capitol Building, the Washington Monument, the Smithsonian, and the Lincoln Memorial. The Mall has been the setting for numerous rallies, protests, inaugurations, and historical events.
3 - The Grand Canyon: This beautiful, steep-sided gorge located in Arizona is over a mile deep. Carved by the Colorado River, the canyon exposes nearly 2 billion years of geological history.
2 - The Empire State Building: The tallest building in the world for over 40 years, and now the tallest in New York, the Empire State Building has been named one of the Seven Wonders of the World by the American Society of Civil Engineers.
1 - The Statue of Liberty: This enormous statue, officially titled Liberty Enlightening the World, commemorates the signing of the Declaration of Independence and was a gift from France in 1886. It is one of the most recognizable icons of the US and is known all around the world.
The World Meteorological Organization says the title comes after it investigated a long-held record from El Azizia, Libya, and found that an inexperienced weather observer recorded the temperature incorrectly.
An international team of weather experts has named California'sDeath Valley the world's hottest place.
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-Day-0615
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-06-14
/Photo-Galleries/In-Pictures/Erin-go-bragh-images-of-Ireland
/Photo-Galleries/In-Pictures/Weather-extremes-2013
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-06-13
/Photo-Galleries/In-Pictures/Children-s-labors
/Photo-Galleries/In-Pictures/Wildfires-2013
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-06-12
/Photo-Galleries/In-Pictures/Turkey-s-discontent
/Photo-Galleries/In-Pictures/Venezuela-after-Chavez
/Photo-Galleries/In-Pictures/James-Whitey-Bulger-on-trial
/Photo-Galleries/In-Pictures/Facebook-fans-caption-Monitor-photos