Magic Kingdom" was often used as an unofficial nickname for Disneyland before Walt Disney World was built. The official tagline for Disneyland is "The Happiest Place On Earth", while the tagline for Magic Kingdom is "The Most Magical Place On Earth". Up until the early 1990s, Magic Kingdom was officially known as "Walt Disney World Magic Kingdom", and was never printed without the Walt Disney World prefix. This purpose was to differentiate between the park and Disneyland in California. In 1994, to differentiate it from Disneyland, the park was officially renamed Magic Kingdom Park. Like all Disney theme parks, the official name of the park does not start with an article ("the"), though it is commonly referred to that way; however, a sign on the railroad station at the front of the park reads "The Magic Kingdom".