Cape Cod is located in the state of Massachusetts, USA, and is known for its scenic coastal roads and scenic vistas. Some of the most popular coastal roads on Cape Cod include:

1. Route 6A: This is a historic road that runs along the outer Cape, from Sandwich to Provincetown. The road passes by numerous charming towns, beaches, and lighthouses, and offers stunning views of Cape Cod Bay and the Atlantic Ocean.
2. Sandwich Road: This road runs along the shore of Cape Cod Bay, offering panoramic views of the water and the nearby marshes.
3. Race Point Road: This road runs through the Cape Cod National Seashore and provides access to Race Point Beach and the stunning views of the Atlantic Ocean.
4. Shore Road: This road runs along the shore of Nantucket Sound, offering picturesque views of the water, the nearby dunes, and the historic houses that line the road.
5. Scenic Road: This road is a short, scenic drive that runs through the town of Chatham and offers views of the town’s historic houses, harbor, and the surrounding countryside.

These are just a few examples of the many beautiful coastal roads on Cape Cod. Whether you are looking for a scenic drive, a place to go for a walk or bike ride, or simply a place to enjoy the natural beauty of the Cape, there is a road that is perfect for you.