The new Kansas City Chiefs stadium isn’t yet under construction, but it’s already having an adverse effect on a future neighbor.Mattel, one of the world’s largest toy makers, has plans to build a new theme park in Wyandotte County, close to where the NFL team will be moving.The Chiefs plan to move to a domed stadium for the 2031 NFL seasonManicaThe $539 million project, named ‘Destination KCK’ is set to feature rides and attractions based on both Barbie and Hot Wheels, two of their top-selling brands, and hotels will also be built on the site.Mattel initially hoped to open in 2026, but have faced significant delays, and will now have to call an audible because of the Chiefs and their new $3 billion stadium.New NFL stadium forces change to theme park plansEpic Resort Destinations, the developer for the Mattel project, expects to revisit and change its plans to better mesh with the incoming football stadium, which will be built just north of their site.According to the Kansas City Star, those changes — and what they’ll look like — are still in the works.It’s believed Epic Resort Destinations plan to remove parts of the project, including an RV park for visitors.New elements could be added, and the group will likely bring revised site plans to the city in the coming weeks.An initial $490m proposal, the cost has grown, and Mattel’s park is now scheduled for 2030 completion — with a deadline from the Bonner Springs City Council to begin vertical construction by October 2027.Megan Gilliland, the city’s economic development manager, has said ‘solid site plans’ must be in place before any other government incentives move forward.According to the Star, Bonner Springs granted $221m in tax incentives to help pay for the project construction.The developer also gets a 25 percent discount on property taxes paid to the local government, and will join a neighborhood of sales tax and revenue (STAR) bond projects in western Wyandotte County, which also cover the new Chiefs stadium.Mattel has plans to build an adventure park in Wyandotte CountyAFPThe Chiefs’ stadium plans have forced changes to the theme park projectManicaWhile the Chiefs are already having an impact on nearby projects, little has been announced publicly about their new stadium since relocation was announced in December 2025.What is the latest on the Chiefs’ stadium plans?The team expects to reveal renderings for their new, domed facility later this year, and owner Clark Hunt said last month that their plan is to begin bidding for future Super Bowl, Final Four and College Football Playoff games.“We’re making progress,” Hunt said in April.“We have a design competition that’s ongoing between Manica and Populous, and I would hope in the next several months that we’d be able to make a decision on the lead architect.”The stadium will eventually be built near the Kansas Speedway, and a retail district known as The Legends.That area is also home to Sporting Park, the stadium of Major League Soccer club Sporting Kansas City, and the Kansas City Monarchs, a minor league baseball team.The Chiefs will continue to play at Arrowhead until they move to a new homeGettyLast month, Hunt hinted that the Chiefs have an expectation that their new stadium will be ‘an enclosed dome.’“We plan on bidding for Final Fours, College Football Playoff games, bowl games and, of course, the Super Bowl,” he said.“It will coincide with the construction of several other NFL buildings, so we will have competition, but I will make sure that Kansas City and the Chiefs put their best foot forward in that process.”The team hopes to open their stadium ahead of the 2031 season.NFL Stadium StatusChicago Bears – NFL’s second-oldest franchise ready to abandon state as $5bn stadium project delayed againKansas City Chiefs – Chiefs owner issues response as Kansas City’s $4bn cross-state relocation plan hits roadblockJacksonville Jaguars – $5.6bn NFL team to relocate 150 miles away to 90-year-old stadium as decision madeCleveland Browns – NFL team stung by new $2.6bn stadium as owners release statementTennessee Titans – Inside $2.2bn NFL stadium revealed as new ‘stolen’ uniforms and logo slammed after leakUntil then, Patrick Mahomes & Co. will continue to play at Arrowhead Stadium in Missouri.Stay up to date with the NFL across all our talkSPORT platforms – subscribe to our YouTube channel for the latest news, opinion, exclusive interviews and our daily unfiltered, unscripted show ‘The S* Word, from 8am ET