I'm off the deep end here...
If you are going to visit places you cannot carry at, consider leaving your gun at home or consider not going.
At Midway Airport a month ago, a buddy of mine had his gun stolen from a lockbox cabled to his seat and completely hidden. He was only parked there for a few hours so he could take mass transit into the city. CPD was on the scene immediately and it only added an hour or so to his day, but someone has his gun...
On the occasion when you have to visit a statutory prohibited place (such as a museum), it's still worth carrying. While you do have to leave your firearm in the car, you are still protected for the trip there / trip back, and anywhere else you go that day. If I have to go into the City of Chicago, I'd rather be protected for most of my trip than for none of it...
To the OP, the sections which pertain are:
Section 65. Prohibited areas.
(a) A licensee under this Act shall not knowingly carry a firearm on or into:
(13) Any public park, athletic area, or athletic facility under the control of a municipality or park district, provided nothing in this Section shall prohibit a licensee from carrying a concealed firearm while on a trail or bikeway if only a portion of the trail or bikeway includes a public park.
(21) Any building, real property, or parking area under the control of a zoo or museum.
(b ) Notwithstanding subsections (a), (a-5), and (a-10) of this Section except under paragraph (22) or (23) of subsection (a), any licensee prohibited from carrying a concealed firearm into the parking area of a prohibited location specified in subsection (a), (a-5), or (a-10) of this Section shall be permitted to carry a concealed firearm on or about his or her person within a vehicle into the parking area and may store a firearm or ammunition concealed in a case within a locked vehicle or locked container out of plain view within the vehicle in the parking area. A licensee may carry a concealed firearm in the immediate area surrounding his or her vehicle within a prohibited parking lot area only for the limited purpose of storing or retrieving a firearm within the vehicle's trunk. For purposes of this subsection, "case" includes a glove compartment or console that completely encloses the concealed firearm or ammunition, the trunk of the vehicle, or a firearm carrying box, shipping box, or other container.
So, outside your car, you cannot carry in certain parts of the lakefront. But it's not the entire lakefront which is prohibited, merely specific places.
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