Decided to visit this while staying with family in the area and while it was an interesting garden and sculpture area it was small and not really worth the effort to duck traffic to get there. As others have said even if you ponder deeply every single sculpture you'll spend about 30-40 minutes tops at the garden.
It is free to get in - though they are soliciting donations - but it isn't that great a place to visit. Honestly, i think it is a nicer garden for those who are locals and want a shaded area to sit and read a book or, like one flyer noted, joining the bi-weekly yoga group that met there.
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