Miller Park is a public park in Bloomington, Illinois. It is in the southwest part of the city, on a large block south of Wood Street and east of Morris Avenue. Miller Park's trainThe park features a pavilion, an artificial lake, a zoo, softball fields, two war memorials, and a preserved steam locomotive, coal car and caboose from the Nickel Plate Railroad which formerly served the area. The park also includes a mini golf course, sand volleyball courts and a playground. During the warm weather of summer an outdoor theater provides productions for local people. On July 4 the park hosts a fireworks display which is launched over the lake. spring trout fishing season in Illinois opens at 5 a.m. on Saturday, April 1. “The spring trout opener is always a big day in Illinois,” Flood said. “It is a great way to begin our new fishing season.” Rainbow trout are released in this lake.