About an hour
I've only looked around the outside.
One tour a little over 1 he. But if you add the garden tour and second tour easy 3 hrs
They offer 2. The long1 is 2 and a half hours
The primary tour takes about an hour maybe a little longer. I recommend taking the additional tour titled Explore More. It lasts about an hour and a half and you get to see rooms you did not get to see on the primary tour.... Well worth the additional fee.
they have different tours.. the one I went on was the Mansion Tour and it was a little over an hour.
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