Architecture enthusiasts are getting ready to mark National Skyscraper Day, which this year will be celebrated on Sept. 3, World's Special Days noted. How or why the skyline-defining structures got to be honored with such a date is lost to history, but that doesn't mean you can't be part of the festivities.

Consider a trip to New York's Skyscraper Museum or a visit to the famous Skydeck on the 103rd floor of Chicago's Willis Tower. Or show your appreciation for these architectural masterpieces by investing in a new case for your iPhone 6 - a move that will also help protect your beloved smartphone.

Here are some of our skyscraper-inspired favorites:

Zazzle: "If I can make it there, I'll make it anywhere," Frank Sinatra sang about New York City. But maybe his lyrics should have read, "If you can build it here, you can build it anywhere."

America's largest city is, of course, famous for its skyscrapers, and Zazzle's New York City Infinite Skyline Barely There iPhone 6 Case celebrates that legacy. The formfitting, featherlight cover is impact resistant and preserves access to all of your phone's ports, controls and sensors. Made in the Unites States, it will set you back $44.95.

Society6: The Empire State Building, which has graced the city's skyline since 1931, is arguably New York's most famous skyscraper. With its antenna spire included, the building rises to an impressive 1,454 feet, and its art-deco shape is recognized around the world.

And Society6's Empire State Building iPhone 6 Case by Aibo pays homage to this landmark in a uniquely colorful way. The impact resistant yet flexible hard case features an extremely slim profile and is available for $35.

Fine Art America: Who says that skyscrapers can only be found in New York, Chicago and San Francisco? Anyone taking a look at the beautiful skyline of Nashville for instance, would beg to differ.

No fewer than a dozen buildings in the Tennessee city exceed 300 feet, and Fine Art America's Nashville Skyline Panorama iPhone 6 Case demonstrates the beautiful setting along the Cumberland River. The impact-resistant hard shell case designed by a California artist retails for $40.