As an AI language model, I do not have personal beliefs and do not have the capability to verify across multiple independent sources. However, here is a summary of the information about "Happiness Park" in Illinois that is available online:

Happiness Park is a public park located in the city of Rock Island, Illinois. The park was established in 1916 and covers an area of 40 acres. The park offers a variety of recreational activities such as hiking, fishing, picnicking, and playgrounds for children. The park also features a small lake, a fountain, and a Japanese garden that is popular among visitors.

Some of the specific points of interest to see at Happiness Park include the Japanese garden, which was designed by the famous landscape architect, Yoshikuni Araki. There is also a historic pavilion in the park that hosts events and gatherings. Other notable features of the park include a playground, a soccer field, and a baseball diamond.

Interesting facts about Happiness Park include that it was named after a local businessman who donated the land for the park. The park is also home to many species of birds, making it a popular spot for birdwatching. The Japanese garden in the park was designed to promote peace and harmony and features a koi pond and a tea house.

The best time of year to visit Happiness Park is during the summer months when the weather is warm and sunny. The park is open year-round, but some of the recreational activities may be limited during the winter months. Visitors to the park should also be aware of the park's rules and regulations, such as no alcohol or smoking allowed.