It contains well-preserved house deposits and numerous graves. State of Iowa archaeologist John Doershuk was assisted by University of Iowa archaeologists at this dig.
The Black Diamond mine, near the south end of the West Seventh Street Bridge, sank a 150-foot (46 m) mine shaft to reach a 5-foot-thick (1.5 m) coal bed.
A 2007 article in The New York Times said, "If you have any desire to witness presidential candidates in the most close-up and intimate of settings, there is arguably no better place to go than Des Moines." Some historians and researchers lacking linguistic or Algonquianist training concluded that Moingona meant "people by the portage" or something similar, a reference to the Des Moines Rapids.
This was where the earliest known encounters between the Moingona and European explorers took place.
The Sauk and Meskwaki did not fare well in Des Moines.
The illegal whiskey trade, combined with the destruction of traditional lifeways, led to severe problems for their society.
The city is the headquarters for the Principal Financial Group, the Meredith Corporation, Ruan Transportation, EMC Insurance Companies, and Wellmark Blue Cross Blue Shield.