DENVER (KDVR) — Tuesday is March 3, which makes it 303 day in Colorado. It is a day to celebrate all of the great things about Denver.

Why is it called 303 Day? The area code in the greater Denver-Boulder area is 303. It was later joined by 720.

303 used to serve as the area code for the entire state of Colorado.

Whether you are taking a stroll through downtown, catching a game at Coors Field, taking your dog on a walk through Cherry Creek State Park, grabbing a beer at one of the more than 100 breweries in Denver or gazing at the incredible variety of sunrises and sunsets, the possibilities are endless in the city.

Take a look at some of these beautiful pictures of Denver to celebrate 303 Day!