Home of four different baseball teams, Kansas City Municipal Stadium existed for almost five decades. The stadium was originally built for the Kansas City Monarchs of the Negro League and the Kansas City Blues (minor league team). The stadium consisted of one grandstand extending down the first and third base lines, that had a capacity of 17,500 when it opened on July 3, 1923. The stadium was originally named Muehlebach Field, after owner of the Blues, George Muehlebach who built the stadium. In 1938, the New York Yankees bought Blues and the stadium was renamed Ruppert Stadium, after the owner of the Yankees, Jacob Ruppert. Several years later the stadium was renamed Blues Stadium.

In 1954, owner of the Philadelphia A’s Arnold Johnson decided to move his team to Kansas City. The city now had a professional baseball team. In order for the capacity to be increased at Blues Stadium an upper deck was added. Beginning in January 1955 the stadium was reconstructed. The stadium now had a double decked grandstand that extended from homeplate to the right field foul pole and down the third base line. A lower level grandstand extended to the left field foul pole. Bleachers were in right field and the ballpark could seat 30,611 fans. Blues Stadium was renamed Municipal Stadium by opening day, April 12, 1955. A scoreboard from Braves Field was added beyond centerfield. In 1960, Charlie O. Finley became the owner of the A’s. As part of an effort to make the stadium more hitter friendly, an area of bleachers known as "Pennants Porch" was added in right field prior to the 1964 season, so the ballpark could have the same home run distance as Yankee Stadium. However, the commissioner of baseball made the club remove the seats days later.

Kansas City Municipal Stadium had several unique features. A small zoo and picnic area was behind the right-field fence, that housed the team mascot, a mule named "Charlie O". A mechanical rabbit, named "Harvey" rose out of the ground with new baseballs for the umpire and a compressed-air device blew dirt off homeplate. Municipal Stadium was a great place to watch a baseball game. In 1967, a bond was issued to build a new stadium for the A's. However, Charlie Finley decided to move the team to Oakland after the 1967 season. Major League Baseball expanded and the Kansas City Royals were formed. They began playing at Municipal Stadium on April 8, 1969 and played their until October 4, 1972. The Royals moved into Kauffman Stadium in 1973.