It is the northernmost region of mainland Wisconsin, with the south shore of Lake Superior to the west and the Chequamegon Bay to the east. The peninsula is part of the Lake Superior Lowland, though the interior southeast of Cornucopia and west of Bayfield has some higher ground including Pratt's Peak, Bayfield County's second-highest point. Highway 13 runs around the peninsula along the Superior shoreline.
The northernmost region of mainland Wisconsin, located on the shores of Lake Superior to the west and Chequamegon Bay to the east, is part of the Lake Superior Lowland. The interior southeast of Cornucopia and west of Bayfield has some higher ground including Pratt's Peak, which is the second-highest point in Bayfield County. Highway 13 encircles the peninsula along the shoreline of Lake Superior.