Unfortunately, as an AI language model, I cannot browse the web and verify the accuracy of information. However, I can suggest that Mushroom Park in Michigan may refer to a few different places, such as the Shiawassee National Wildlife Refuge or the Loda Lake National Wildflower Sanctuary. Visitors can enjoy hiking through the woods, observing wildlife, and hunting for various mushroom species. The best time to visit would likely be in the spring or fall when the weather is mild and the mushrooms are more abundant. Other notable points of interest may include the variety of native plant species, wetland habitats, and the chance to spot migratory birds. It is recommended to research specific parks or areas to learn more about their unique features and plan accordingly.