Sec. 2. (a) A cumulative building fund to provide money for the construction, remodeling, and repair of courthouses may be established by the county legislative body under IC 6-1.1-41.
(b) As used in this section, "courthouse" includes a historical complex consisting of a former county courthouse, jail, and sheriff's residence which is open to the general public for educational or community purposes in a county having a population of more than one hundred eighty thousand (180,000) and less than one hundred eighty-five thousand (185,000).