Complex sentence: The Kenosha History Center is within the 1917 City water treatment plant on Simmons Island adjoining the 1866 Kenosha Light Station, and showcases the history of Kenosha from the Indians and the first settlements to the present day.
Split into simpler sentences: The Kenosha History Center is in the 1917 city water treatment plant on Simmons Island adjoining the 1866 Kenosha Light Station. It showcases the history of Kenosha from the time of Native American settlements and the first European settlements to the present day.