Major U.S. cities like New York, Chicago, Miami and Los Angeles draw millions of local and foreign visitors each year, but those who have taken the time to venture away from America's metropolises know that the United States is also a country full of natural sights.

Nowhere can tourists better experience those wonders than at the 59 national parks maintained by the Department of the Interior. Once you have seen Yosemite's famous sequoia trees or the impressive depths of the Great Canyon, you may want to take a piece of that beauty back to city life with a case for iPhone 6 or iPhone 6 Plus.

Thankfully, talented artists have preserved many of the amazing views found at our national parks in photographs and drawings, which in turn can be found on a variety of cases for your iPhone 6. So why not choose one of them as a souvenir and protect your smartphone at the same time? Here we have tracked down some of our favorites:

  • Yosemite National Park, which spans part of three counties in eastern California, features prominently on National Geographic's list of the10 most visited protected areas. Its beauty has inspired countless painters, and Zazzle's Yosemite Travel Art Tough iPhone 6 Case may just do the same for you. It is available for $47.95, or $52.95 if you happen to own the larger iPhone 6 Plus.

  • Utah's Zion National Park may not be quite as famous as Yosemite, but its reddish and tan-colored Navajo sandstone panoramas still attract some 2.8 million visitors per year. You can find the vista beautifully captured on Fine Art America's Zion's Twilight iPhone 6 Case, which retails for $34.95 for both the standard iPhone 6 and the iPhone 6 Plus. The cover is available with both a black and white backgrounds.

  • If you like a dash of U.S. history in your nature experience, rest assured that South Dakota's Mount Rushmore National Memorial is also maintained by the National Park Service. The famous sculpture features the heads of Presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln. When it was built in the first half of the 20th century, the project cost less than $1 million. Also a bargain: BMC's Mount Rushmore iPhone 6 Plus Crystal Clear Case, which is available on Amazon for $14.29.

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