Platteville

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Atlas ObscuraOct 12, 2026

World’s Largest M in Platteville, Wisconsin

Four miles northeast of Platteville, a gigantic white “M” dominates the landscape. At 241 feet high and 214 feet wide, it is the world’s largest “M”. Set at a 45-degree angle and facing south, the landmark proudly celebrates the region’s mining heritage. The story began in 1924, when Platteville’s engineering club wanted to challenge the Colorado School of Mines. Colorado had already built an “…

1 sight in this story
  • MSightWorld's largest "M" at 241 feet high and 214 feet wide.
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