Union Park is a former baseball ground located in Baltimore, Maryland. The ground was home to the Baltimore Orioles during their first "glory years" in the 1890s. It was located in an area bounded by East 25th Street to the north, 24th Street to the south, Hunter Street to the west and Barclay Street to the east. Guilford Avenue teed into 24th from the south, behind right-center field. There was a destructive fire on January 14, 1895, which destroyed the grandstand and a clubhouse. The structure was rebuilt and the Orioles were able to continue to use ballpark for their remaining seasons.