While people have traveled for trade or religion since ancient times, Thomas Cook is widely considered the "Father of Modern Tourism." In 1841, he organized the first-ever "package tour"—a 12-mile train journey from Leicester to Loughborough for 570 people to attend a temperance rally. Cook’s innovation was the "inclusive" price, covering the fare and a meal, which made travel accessible to the middle class for the first time. Before Cook, the "Grand Tour" of the 17th and 18th centuries saw wealthy aristocrats traveling through Europe to study art and culture, but this was a personal pursuit rather than an industry. Ancient historians also point to Herodotus, who traveled to document the Seven Wonders of the World, as the first "tourist" in a literal sense. However, it was the Industrial Revolution and the invention of the passenger train that allowed Cook to turn travel into a commercialized product. By 2026, the "Cook model" of pre-arranged itineraries and global hospitality has evolved into a multi-trillion dollar industry, but the core concept—traveling for the sake of the experience rather than necessity—dates back to that single train ride in Victorian England.