Very good
$8 and it's well worth it! Takes about 30 minutes if they're not crowded. The guide will spend extra time with you and answer all your extra questions if she doesn't have another tour ready to go.
$8 Adult, everybody else $7.
$4 dollars for children 12 and under
And so, I confirm
$8 for an adult with audio tour or $5 on a self guided tour.
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