[5] The park covers an area of 1.5 hectares (3.7 acres) that features a baseball diamond, basketball courts, a wading pool and a children's playground.

[34] Cottingham Square, a municipal park[35][36] with an area of 0.7 hectares (1.7 acres)[37] that was situated near McCormick's home,[38] was the original location for the playground[27][28][38][39] but it was abandoned by the association[40] because the site was too close in proximity to the Canadian Pacific Railway line.

[1] It featured climbing ladders, glider chairs, merry-go-rounds, sandboxes, seesaws, slides, swings and a large wading pool for children's amusement.

[76][77][78][79] During the First World War, Mary McCormick and her Canadian-born nursing companion, Grace Thorne Walker,[80] held Christmas pageants for 400 children and their parents at the main hall in 1917[81][82] and 1918.

[87][91] Located next to the original building, the second facility featured a gymnasium,[92] an indoor swimming pool with a seating gallery for 500 people, a children's nursery and handicraft studios.

[29] Crafts and fashion exhibitions by the Toronto Parks and Recreation Department[94] were held at the facility from 1965[95] to 1966[94][96] and amateur boxing championships for boys were staged at its gym from 1965[97] to 1972.

[98] On May 6, 1991, chlorine gas escaped from a ruptured cylinder pipe at the McCormick Park Recreation Centre and forced the building to close for 90 minutes.

[89] Before firefighters had capped the leaking cylinder, the surrounding area was sealed off by the police and 400 students from the nearby St. Veronica Catholic School and residents of 12 houses on Frankish Avenue were evacuated temporarily.

[89] In 2001, the building underwent a major renovation estimated at $2,808,468[99] ($4.51 million in 2023 dollars)[29] and Toronto City Council began referring to the facility as the Mary McCormick Recreation Centre.

[2][10] Built at an estimated cost of $542,980[103] ($4.2 million in 2023 dollars),[29] the indoor municipal skating arena features two ice rinks[103][104] and a community meeting room with a concession stand that is named the Nixon Room as a tribute to George Adam Nixon,[2] a former member of the Legislative Assembly of Ontario who was elected to represent the Toronto riding of Dovercourt in 1971[105] and one of the first members who served on the arena's board of management.

[109] The discovery had spurred the Toronto Parks and Recreation Department to replace all ice-resurfacing vehicles with other models that were not gasoline-powered and allow provincial health inspectors to monitor the air quality at all municipal skating arenas.

[4] On September 27, 2014, McCormick Park was reopened with an updated children's playground that featured climbing boulders, a large jungle gym, a new merry-go-round and swings.