We spent about 2.5 hours there. This included a tour of the maritime artifacts, wandering through the lighthouse keeper's residence, the gift shop (best in St Augustine), and, of course, climbing all the way to the top of the lighthouse.
Cost?
If you just scale the lighthouse and and passed through the other buildings, about an hour, if you take the tour definitely longer.
We walk slow and look at everything and take lots of breaks so about 2 or 3 hours. But if your not me about 2 hours or less depending on how much you want to spend time there.
About 2 hours
Depends on interest with history. If you go on tour about 2 to 3 hrs
If you go through all the buildings about 2 hours
We spent about 2 hours
We spent two hours going through the museum the gift shop and going up the lighthouse
Around 1 hour.
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