欢乐世界

Worlds of Fun is a 235-acre (95 ha) theme park located in Kansas City, Missouri, United States. Operated by Enchanted Parks, the park features 43 attractions. EPR Properties, a real estate investment trust, owns the park.

Worlds of Fun was founded by American businessmen Lamar Hunt and Jack Steadman under the ownership of Hunt's company, Mid-America Enterprises in 1973. Oceans of Fun is a water park that opened in 1982 and is next to the amusement park. Admission to Oceans of Fun is included with the price of admission to Worlds of Fun. Mid-America Enterprises sold both parks to Cedar Fair in 1995 for $40 million. Cedar Fair merged into a newly-formed company named Six Flags in 2024, which sold the park to EPR Properties in 2026.

Texas and Arkansas native Lamar Hunt brought the Dallas Texans AFL team, which he owned, to Kansas City, Missouri, in 1963, renaming the franchise the Kansas City Chiefs. He founded an operating company in the region called Mid-America Enterprises, which focused on real estate, mining, and entertainment. Worlds of Fun was conceptualized and developed by Hunt, his business partner Jack Steadman, and theme park designer Randall Duell.

Construction began in November 1971 at the northern edge of SubTropolis, a vast subterranean industrial complex developed by Hunt within a limestone mine in the bluffs above the Missouri River in Clay County, Missouri. The project was completed over 17 months at an estimated cost of $20 million, and the park officially opened on May 26, 1973. At the time it opened, numerous projects across Kansas City were being built, including Kansas City International Airport, Kemper Arena (now called Hy-Vee Arena), and the Truman Sports Complex. The park was originally planned to complement a 500-acre (2.0 km2) hotel and entertainment complex, but a lagging economy during the park's early years derailed the idea.

In 1974, the first addition to Worlds of Fun was the 4,000-seat Forum Amphitheater, which opened in the Europa section of the park. In 1976, a new section opened in honor of the United States Bicentennial – the 200th anniversary of the signing of the Declaration of Independence–and was named Bicentennial Square. The new section included the debut of Screamroller from Arrow Dynamics, which was a replica of the first modern looping roller coaster, Corkscrew, that opened a year earlier at Knott's Berry Farm.

In 1982, Oceans of Fun opened next door as the largest water park in the world. In the same year, a sub-world named "River City" was opened in Americana, adjacent to the East Asia section (then referred to as the Orient section). Screamroller was transformed into Extremeroller the following year, which featured stand-up trains instead of the original sit-down models, making it the first looping, stand-up roller coaster in North America. Several years later, in 1989, Worlds of Fun ended the decade with the addition of Timber Wolf, a wooden roller coaster that initially ranked high in several national polls.

Cedar Fair LP purchased Worlds of Fun in 1995 for $40 million. The new owners invested $10 million with the addition of Mamba, a D.H. Morgan Manufacturing steel hypercoaster, to the park's attraction lineup in 1998.

During the COVID-19 pandemic, the park operated under a limited schedule from 2020 to 2022. Worlds of Fun operated from June 22 to September 7 in 2020, while Oceans of Fun did not open that season. In 2021, the park opening was delayed until May 22, and until April 30 in 2022.

2006: Patriot opens as the longest, tallest, and fastest full-circuit inverted roller coaster in the region. It was the park's largest capital investment on a single attraction at $14 million.

2008: For their 35th anniversary, Worlds of Fun added a festival called Oktoberfest.

2009: A new wooden coaster, Prowler, is added to the Africa section of the park. It receives the Golden Ticket Award for "Best New Ride of 2009" by Amusement Today magazine.