Truman Sports Complex

[2] The complex was revolutionary in an age when new stadiums tended to be built as multiuse venues for planning and cost purposes.

In 1983, several HNTB architects were hired by St. Louis-based architectural firm Hellmuth, Obata and Kassabaum, forming what would later become Populous and opening their primary office in Kansas City.

Had the 40–year extension of an existing 3/8th Jackson County, Missouri, tax passed when it was put to a vote on April 2, 2024, Populous would have been the company to build New Royals Stadium.

[6][7][8] Kansas City began a project to renovate both Arrowhead and Kauffman Stadiums in 2007, following the passage of a 3⁄8 cent sales tax increase in a referendum in 2006.

[12] GEHA Field at Arrowhead Stadium, home of the National Football League's Kansas City Chiefs, opened in the fall of 1972.

[13][14] Arrowhead has long held a reputation for being one of, if not the, loudest outdoor stadium in the NFL due to the exuberance of the Chiefs' fans.

[16] Arrowhead reclaimed the title, however, on September 29, 2014, when noise levels reached 142.2 decibels as the Chiefs defeated the New England Patriots on Monday Night Football.