Maine was the twenty-third state to join the United States of America, and is the largest state in the New England region. It is primarily known for its rocky coastlines and dense forests. Its capital is Augusta.
In The Shawshank Redemption segment of "Three Kings", Andy's (Peter) instructions to find his stolen money involve traveling to Maine.
A trip to Maine turns into an adventure to find the source of a dirty joke in "The Splendid Source".
When Lois worries bout finding the killer in "And Then There Were Fewer", Peter is more interested in the motel and restaurant listings in James Woods diary, mentioning Maine.
Brian and Stewie drive trough Maine in "Road to the North Pole", passing a sign that notes the beaches are giant, ugly boulders.
Bonnie travels to Maine in "The Hand That Rocks the Wheelchair", leaving Joe in Meg's care.
In "Cabin Pressure", the Griffin Family travels to Mooseattackee, Maine alongside Cleveland, Quagmire, Joe, and their families for a five-night vacation in Preston Lloyd's cabin, which quickly goes south. In the same episode, Preston reveals that he only owns the cabin so he can open a shell company and in actuality hates living in Maine.