For off-road tours
The most untamed part of Nantucket is Great Point, the northern tip of the island that contains the Coskata-Coatue Wildlife Refuge. The Trustees of Reservations (978-921-1944, thetrustees.org) leads daily over-sand vehicle tours to the refuge May through October. The trips culminate with a visit to Great Point Light, where you might spot cavorting porpoises and seals or whales feeding close to shore. One of the great retro experiences of summer is exploring the dunes of the Outer Cape and Race Point with Art’s Dune Tours (508-487-1950, artsdunetours.com) in Provincetown. For romance, take the two-hour sunset tour.