The park is located in the district of Downtown, between Jana Pawła II Avenue, Marszałkowska Street, Mier Halls, and the Za Żelazną Bramą neighbourhood.

They in turn were named after Wilhelm Mier, who was the commanding officer of the Crown Horse Guard Regiment stationed there.

[3][6] On 21 May 2019 in the park was unveiled the monument of Feliks Stamm, a 20th-century boxing champion.

[7] On 2 March 2023, in the park was unveiled the monument of Piotr Drzewicki who was the mayor of Warsaw from 1917 to 1921.

[8][9] The Mier Park has the form of a long and thin rectangular strip of land between Jana Pawła II Avenue and Marszałkowska Street.