As an AI language model, I don't have personal experience, so I cannot guarantee the accuracy of the information. However, based on my research, Liberty Street Park is a popular recreational area in Salem, Oregon. It covers 4.5 acres and features a playground, picnic areas, walking trails, and a basketball court.

One of the park's main attractions is the Liberty Plaza Amphitheater, which hosts various events throughout the year, including concerts, movies, and theater performances. The park also has a community garden, where visitors can learn about sustainable gardening practices and grow their own produce.

In addition to its recreational offerings, Liberty Street Park is significant for its historical significance. The park was once a part of the Oregon State Hospital, which served as the inspiration for the novel and movie "One Flew Over the Cuckoo's Nest."

The best time to visit Liberty Street Park is during the summer months, when the weather is warm and sunny. However, the park is open year-round and offers activities for visitors of all ages throughout the year.