Union Grounds (St. Louis)

The ballpark was bounded by Jefferson Avenue (west, first base); Howard Street (north, third base); 25th Street (east, left field); and Cass Avenue (south, right field).

Mullanphy Street was later cut through what was once right and center fields.

[3] Beginning in 2019, the ballpark site and several adjacent city blocks were cleared off to make room for a National Geospatial-Intelligence Agency facility.

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