Monument Park is an open-air museum located in Yankee Stadium in the Bronx, New York City.

It contains a collection of monuments, plaques, and retired numbers honoring distinguished members of the New York Yankees of Major League Baseball.

When the Yankees moved to their new ballpark in 2009, Monument Park was built beyond the center-field fences and the contents of the old one transported over.

Thirty-seven members of the Yankee organization have been honored in Monument Park, while 22 have had their uniform numbers retired.

An additional honor, a monument mounted on a large red granite block, has only been awarded to six Yankees: manager Miller Huggins, players Lou Gehrig, Babe Ruth, Mickey Mantle, and Joe DiMaggio, and owner George Steinbrenner.

Yankees manager Miller Huggins died suddenly in 1929, and the team erected a free-standing monument in front of the flag pole in his honor on May 30, 1932, between games of a Memorial Day doubleheader.

[1] The monument consisted of a bronze plaque mounted on an upright block of red granite resembling a headstone.

The Yankees dedicated a plaque on the center field fence for Jacob Ruppert in 1940[4] and similar monuments for Lou Gehrig in 1941 and Babe Ruth in 1949, following their deaths.

In the 1992 book The Gospel According to Casey, by Ira Berkow and Jim Kaplan, it is reported that on one occasion a Yankees outfielder had let the ball get by him and was fumbling for it among the monuments.

Manager Casey Stengel hollered to the field, "Ruth, Gehrig, Huggins, somebody get that ball back to the infield!

As this fenced-in area between the two bullpens gathered additional plaques on the original wall, it began to be referred to as "Monument Park".

[18] The Mantle and DiMaggio plaques were removed from the wall upon their deaths in 1995 and 1999, respectively, and mounted on red granite blocks matching the original three of Huggins, Gehrig, and Ruth.

[28][29] The Yankees honored Rivera by retiring his uniform number on September 22, 2013, during his final season, making him the first active player to be enshrined in Monument Park.

[31] In 2014, the Yankees dedicated plaques in Monument Park for Joe Torre, Paul O'Neill, Tino Martinez, and Goose Gossage, and retired No.

[36][37][38][a] On June 25, 2019, the Yankees dedicated a plaque commemorating the 50th anniversary of the Stonewall Inn Uprising, which sparked the modern day movement for LGBT rights in the United States.