A few suggested locations to photograph the sunrise and sunset on Cape Cod:

Sunrise
Chatham Lighthouse Beach
Nauset Beach, Orleans
Coast Guard, & Nauset Light Beaches, Eastham
Any ocean beach in Eastham, Wellfleet or Truro
Race Point Beach, Provincetown

Sunset
Nobska Lighthouse, Woods Hole
Greys Beach, Yarmouthport
Chapin Beach, Dennis
Paine’s Creek, Brewster
Rock Harbor, Orleans
First Encounter Beach, Eastham
Race Point Beach, Provincetown