The museum admission is $3 for seniors(55+) reg.adm. is $5. There is also an art exhibit that only asks for a donation. Outside there is a garden with native plants and mining antiques. That is free.
Once a month free but usually I think$5-7. They also have beautiful art showings and classical concerts for free (donations). Those ladies are amazing they do so many quality events there. The library across the street also does lots of events both well attended friendly. The new Naval airbase museum is next door for about same price.
They ask for a donation ,so theoretically no cost.
Donation, i think.
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