The Grand Canyon is vast, covering 1,218,375 acres and 1,904 square miles across Arizona. Here's what to know.

Millions of people visit the Grand Canyon each year. But this year will be different for one portion of the national park.

How big is the Grand Canyon? The National Park Service reports that the canyon is “277 river miles (446km) long, up to 18 miles (29km) wide, and a mile (1.6km) deep.” ...