As an AI language model, I do not have access to up-to-date information on local attractions and landmarks as it may change frequently, so I cannot provide a specific summary about Prospect Plaza Park in Missouri. However, I can provide general guidelines on how to create a summary for a specific location.

To write a summary about Prospect Plaza Park in Missouri, you would need to research the history, location, and features of the park. Some good reasons to visit might include the park's scenic beauty, recreational opportunities, and cultural attractions. Specific points of interest might include historical markers, scenic overlooks, hiking trails, and picnic areas. Interesting facts about the area might include the park's history, wildlife, and geology. The best time of year to visit might depend on the park's seasonal attractions, such as fall foliage, spring flowers, or winter sports.

To ensure accuracy, it is important to verify information across multiple independent sources, such as official park websites, travel guides, and online reviews. Additionally, it may be helpful to consult with local experts, such as park rangers, tour guides, or tourism boards, to get the most up-to-date information about the park's attractions and features.