Palm Harbor Museum is a small local-history stop in a historic house, focused on the communities that grew along this part of the Pinellas coast. It is not a major museum, but it gives useful context to Ozona, Crystal Beach, the citrus years, and the old road-and-rail settlement pattern.
Check opening hours before going, since small volunteer-run museums can keep limited schedules. It pairs best with a slow drive through the older neighbourhoods rather than as a standalone destination.