The Holden Arboretum is like a public park except it's not open to the public. You do have to be a member of the Holden Arboretum in each member gets a third of which you punch your key code into a gate which allows you to get into the Holden Arboretum and walk around. The majority of the bridges Lake attractions and events are all sponsored by benefactors. The place appears to be exceptionally clean and well-maintained as you would expect he privately run plot of land. We got there at the end of the season but the main attractions that attracted the most people this year which are extended Bridges and this big skyscraper 3/4 things. We're both closed. That's okay we still had a great time hiking around and we're able to get some great Autumn photographs. I'm not sure what it cost to join the Holden Arboretum but we went as guests of my parents. I'll be sure to get back cuz I can't wait to see what it looks like in the summer.