Sugar Loaf is a bluff on the
Mississippi River topped by a rock
pinnacle, overlooking the city of
Winona, Minnesota, United States. The name "Sugar Loaf" is sometimes taken to mean just the rock pinnacle, which was created by
quarrying in the 19th century. The bluff stands above the junction of
U.S. Route 61 and
State Highway 43. It towers over Lake Winona (a former part of the Mississippi River's main channel), and the pinnacle rises more than above the remainder of the bluff.