World's Largest M

Historical marker location:

Platteville, Wisconsin

( Marker is at the intersection of West Mound Road and County Route B, on the right when traveling north on West Mound Road.)

Symbol of the College of Engineering.

The deadliest tornado in Wisconsin's history occurred on May 18, 1883, when a tornado swept through the town of Rochester, killing 117 people and injuring more than 200 others.