Pittsburgh is known for its many firsts: The first commercial radio station, the first Ferris Wheel, and the first public television station in the United States. But, did you know that one of the most recognizable (and, some say, the most delicious) sandwiches in the world was born right here in the Pittsburgh area? Sink your teeth into one of the world's most famous sandwiches and get a glimpse of local history when you visit the Big Mac Museum near Pittsburgh, tucked in one of the most unique McDonald's in Pennsylvania.

Sat along a bustling North Huntingdon highway, the Big Mac Museum pays homage to one of the world's top sandwiches.

If you've not been to this McDonald's in PA, add it to your to-do list.

Inspired by the consumer's desire to have something more than a plain burger, McDonald's franchisee Jim Delligatti created a special sauce to top his new concoction - the Big Mac - in 1967.

Burger lovers were bored. Delligatti realized that, got creative, and voila. The Big Mac was born.

Delligatti's Big Mac consisted of two hamburgers topped with that special sauce, pickles, onion, lettuce, and cheese.

Remember that old television commercial? Most of us probably knew what was on the Big Mac just from singing along - special sauce, pickles, onion, lettuce, and cheese.

Unfortunately, McDonald's had little interest in Delligatti's idea for a new sandwich, although he tried selling the concept to the company for two years.

After getting nowhere with corporate, Delligatti began selling the Big Mac in his Uniontown McDonald's to the delight of his customers and, lo and behold, McDonald's saw the sandwich's popularity and began selling it nationwide.

The Big Mac was a bona fide hit in the Pittsburgh-area.

Snap photos next to the world's largest Big Mac - at 14 feet high and 12 feet wide - when you visit the Big Mac Museum, nestled right inside of the popular North Huntingdon restaurant.

Stroll around the restaurant, perusing the memorabilia of the sandwich that is now sold in over 120 countries.

Did you know that Pennsylvania alone has nearly 500 McDonald's?

Grab a seat at one of the tables where you can...

Read about McDonald's history as you bite into one of those famous Big Macs.

Bringing the kiddos along? No trip to McDonald's is complete - if you have kids - without a visit to the play area.

Treat yourself to a Big Mac and explore the Big Mac Museum, but first find days, hours, and more information on the official website of McDonald's.

Have you been to the Big Mac Museum near Pittsburgh? Do you agree that it's one of the most unique McDonald's in Pennsylvania? Let us know in the comments! The Big Mac Museum is but one of the many unique roadside attractions in and around Pittsburgh. Here are 10 more roadside attractions near Pittsburgh that you might want to add to your bucket list.

If you're planning to do a bit of exploring in Pittsburgh, why not stay awhile? Check into a local Vrbo.