Pumpkin Valley Farm, Dayton, Maine—Most maze-goers will spend about an hour navigating the twists and turns at Pumpkin Valley Farm. This year's theme, appropriately enough, is "Fun on the Farm." Need help? A passport will guide you through by using several trivia questions. 100 Union Falls Road, Dayton, Maine, 207-929-4088. $8, children under 2, free.