M&M's World Las Vegas - one of the largest M&M retail stores

M&M's World Las Vegas at the Showcase Mall bills itself as the world's largest M&M retail store. The four-story store contains interactive displays, branded merchandise, and a large color wall for personalized M&M dispensing, occupying roughly 28,000 square feet. Company materials and media descriptions identify the Las Vegas location as a flagship and among the largest M&M's stores globally.