The county commission of any county is hereby authorized and empowered to acquire real estate and to convey real estate and to enter into a contract, or lease, or both, with the United States government, or any federal agency authorized to make or enter into a contract, or lease, or with any bank or financial institution, or with any individual or persons for the erection, construction, equipment, leasing and renting of a courthouse, hospital, other public buildings, or jail, with an option to purchase the building and to provide for the payment of a yearly rental for the building by the commission: Provided, That any county commission may, as provided in chapter eight, article twenty-three of the Code of West Virginia, also contract with one or more other county commissions within this state for the erection, construction, equipment, leasing and renting of a regional correctional center for either adult or youth offenders at a location mutually agreeable to the contracting parties and not necessarily at the county seat. The county commission of any county is also authorized to contract with the United States government, or any federal agency authorized to make or enter into a contract, or any bank or financial institution, or any individual or persons, to the end that the United States government, or any of its agencies, or agents thereunto duly authorized, or bank or financial institution or individual or persons, may for and on behalf of any county commission, build, erect, construct, equip or furnish upon the property any building, or buildings, including a hospital; and to contract with the United States government, or any federal agency, or bank, or financial institution, or individual, or persons, for the lease, or rental, of the building or buildings, with the privilege and authority of renewing any lease from year to year, for any period of years, not exceeding thirty, with the right to purchase the building, or buildings, and real estate on which the building or buildings are situated, and to apply toward the purchase price thereof any and all rentals paid to the United States government, or agency, or bank or financial institution, or individual, or persons, under the provisions of this act; and the county commission shall pay to the United States government, or any federal agency, or bank, or financial institution, or individual, or persons, the yearly rental, or rentals, for the use and occupancy of the building, or buildings, if and when they are constructed, which yearly rental, or rentals, in the aggregate, may not exceed the total amount, and the interest thereon expended by the United States government, or agency or bank or financial institution, or individual, or persons, on the project, or projects, and the said yearly rentals shall be paid out of levies laid within the Constitutional debts limitations; and to do any and all other things lawfully required by the United States government, or any federal agency, or bank, or financial institution, or individual, or persons, which are necessary and proper to effectuate the purpose of this act.