The Wild Gardens of Acadia is located near the Sieur de Monts section of Acadia National Park. It is free(with entrance to the park) and was an excellent learning experience. This is not necessarily a botanical gardens with a ton of flashy plants. However, it is somewhat like a learning center in that it has a lot of the local plants in the area, and they are labeled. I love to learn about the local plants when I visit a place, so I was so excited walking through the gardens.