This park space was nothing but a mowed patch of land before Great Rivers Greenway constructed the amazing ~1 mile Christy Greenway that runs through the park. This is a series of paved bike/pedestrian trails that are part of the larger River Des Peres Greenway...
I used to live near here for years, so this review will have some personal perspective. For instance, there are red tailed hawks and fox that hunt in this area. I cannot seem to find the proof, but I am convinced this part of the city was either a former landfill or common dumping grounds; or maybe when the cemetery was abandoned, it was filled and graded with crude fill dirt. Why?
Christy Park, according to the city website, is comprised of 16.1 acres of park land, established in 1910. There are no official boundaries listed on that website, so I can only assume that Christy Park and Joseph Leisure Parks are one in the same. There is actually a band of parks that start at Kingshighway and Christy and head south and east toward the River Des Peres, following the Great Rivers Greenway Trail starting near Christy and Holly Hills Boulevards.
It's an oddly shaped neighborhood that does not include Carondelet Park nor the Loughborough Commons shopping center. I always thought the River Des Peres was the dividing line between the city and the county, but the map above from the city website shows the city limits extending south of River Des Peres to Weber road. The neighborhood has some areas that are typical of south city, a la Holly Hills, Princeton Heights, Southampton, etc. Other parts of the neighborhood are more suburban with cul-de-sacs and no sidewalks, etc.