Entrance to the ground is free
The grounds are very nice. There are sculptures in different areas out on the grass. It's about a mile walk if you do the whole circuit on the paved area. Most of the time the gate doesn't charge you an entry fee. The shows usually have a fee attached. I just saw the Andy Warhol exhibit which was great. Nominal fee well worth it.
Admission fee includes the indoor museum. Most museums are free. I went with my dad and we just donated money. Not a fee. Donating helps with the upkeep and management of the museum. Have fun, you will love it.
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