Acorn Park is a 0.1247-acre (500-square-metre) urban park in downtown Silver Spring, Maryland, which features an acorn-shaped gazebo and an artificial grotto.

[1] The site is historically significant as it is thought to be the location of the "mica-flecked spring" that in 1840 inspired Francis Preston Blair to name his estate "Silver Spring".

[2][3][4][5][6][7] Acorn Park is located at the intersection of East-West Highway and Newell Street.

[9] Francis Blair's son-in-law, Samuel Phillips Lee, had the stone grotto built at the site of the spring in 1894.

[8] A small additional tract of land was acquired by M-NCPPC in 1997, to make the current 0.1247 acres (0.05 ha).