The Mall of America in Bloomington is the size of 78 football fields – 9.5 million square feet. Minnesota was admitted as the 32nd state on May 11, 1858, created from the eastern half of the Minnesota Territory and part of the Wisconsin Territory. Its name comes from the Dakota word for "clear blue water.Minnesota is the 12th largest in area and the 21st most populous of the U.S. States. . Opened in 1992, the mall receives over 40 million visitors annually, the most of any mall in the world. 80 percent of the visitors are from Minnesota, Wisconsin, Iowa, Dakota,Illinois .Nickelodeon Universe is an indoor theme park in the center of the mall. The park features roller coasters, among numerous other rides and attractions, and is the largest indoor theme park in the United States. Unlike many indoor amusement parks, Nickelodeon Universe has a great deal of natural foliage in and about the park, and its floor has a wide variance in height - the highest ground level in the park is 15 feet (4.6 m) above the lowest. The rides include the roller coasters SpongeBob SquarePants Rock Bottom Plunge and Avatar Airbender, and a thrill ride called BrainSurge. The latter roller coaster bills itself as a "rather peculiar" ride. It also has a miniature golfing section called Moose Mountain. This miniature golf course features eighteen holes and a relatively fast astroturf surface.The mall of America has 5 floors with more than 520 stores in the mall of America.The mall of America is a popular mall in the United States of America because their is no other mall like this in the United States.