Cosmopolitan No. 4

Historical marker location:

Hamilton, Ohio

( Marker is at the intersection of North Martin Luther King, Jr. Boulevard (U.S. 127) and High Street, on the right when traveling north on North Martin Luther King, Jr. Boulevard.)

Marker installed: 1976

The Ohio River Valley was home to several Native American cultures before European settlement, including the Adena and Hopewell cultures. These cultures left behind many burial mounds and other archaeological sites that are now protected and preserved by the state of Ohio.