Chadwick Arboretum & Learning Gardens is an extensive, urban, green reserve of over 60 acres located within the 1,600 acres of The Ohio State University main campus in Columbus, Ohio. Take a virtual tour of Chadwick Arboretum & Learning Gardens by clicking on the photo above. Or, better yet, come visit our gardens in person. We are open year round and there is no admission fee. Pay-n-Display parking is available in the surrounding parking lots. Even our 12,000 square foot green roof garden is open to the public during normal business hours.