Poised on Castine's stately Main Street is the main building of the Pentagoet Inn, a large old Victorian bed and breakfast.  Guests can stay either in that house or the neighboring Perkins Cottage , a late-18th-century building where all the guest rooms have country antiques.  Between the two, there are 16 rooms, all with private baths.  Closed November through April.  A full breakfast and bikes are included in the rates.