Tip: There is an entrance fee to the Cape Cod National Seashore between Memorial Day Weekend and mid-September. Standard vehicle daily fees are $25 per day, and are valid for the entire park all day, or you can pay $60 for an annual pass. If you plan to visit for 3 days or more, an annual pass is the most cost-effective option, and good for the entire season. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.