You can visit inside of mansion 2 ways. Attend an event held there or the guided tour twice a month. Tours usually the first weekend of each month. $15 per person. Group rates for schools are available. Visit their website for details.
Only on special invite
On the special events, yes, with a tour.
The mansion is open only to special events. Unless there is an event, the park grounds are free to explore 10am to sunset.
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