windmill and the Japanese tea garden. There are a bunch of neat things on the estate, and it's a nice place to go walking and shooting.
This lighthouse, like much of the Fabyan estate, has a story behind it. Apparently, Colonel Fabyan tried to get the portion of the Fox River that passed through his grounds closed-the State of Illinois politely declined this request, so the Colonel had this little lighthouse put up. Apparently it used to flash twice, then three times, then twice....and on and on. Like a little two fingered salute to the state. It doesn't work now, sadly.
Edited to correct links.