Humboldt Park is a 207-acre park located at 1400 North Sacramento Avenue in West Town, on the West Side of Chicago, Illinois. To its west is the neighborhood named after it, also called Humboldt Park. It opened in 1877, and is one of the largest parks on the West Side. The park's designers include William Le Baron Jenney, and Jens Jensen. The park was named for Alexander von Humboldt, a German naturalist and botanist.