(70 ILCS 1815/4)
(from Ch. 19, par. 804)
All property of every kind owned by the Port District shall be exempt
from taxation, provided that a tax may be levied upon a lessee of the Port
District by reason of the value of a leasehold estate separate and apart
from the fee simple title, or upon such improvements as are constructed and
owned by others than the Port District.
(Source: P.A. 77-1799