A couple of weeks ago, I went on one of the bay cruises off of Navy Pier. It’s an annual event, and every time, I wonder about the lighthouse out on the northern breakwater surrounding the Chicago Harbor.
Thanks to Wikipedia, I now know a little about it.
The Chicago Harbor light was built and lit in 1893, for the World’s Fair, and was moved to its present location in 1919, during a renovation of the Chicago Harbor breakwater. Its operation was automated much later, in 1979. Controlled by the Coast Guard originally (until they decided they no longer needed it), it was transferred to the City of Chicago in 2005.
On a clear day, the lighthouse can be seen 24 miles away, as I understand.