Those who have an interest in everything nautical will enjoy Cedar Mills Harbour. It's a nice place to go for a walk along the waterfront and admire some boats.
You'll be spoiled for sightseeing choice when staying in Gordonville. Cedar Mills Harbour is a good place to begin here, but there are loads of other worthy places to explore. Megastar Casino, Hagerman National Wildlife Refuge, and Walnut Creek Marina are near the place for ships to anchor and will fill in your day nicely.