53 Pa. Stat. § 13642
The city council of any such city is authorized to use any suitable lands already held for city purposes, or to acquire any quantity of lands within the county or in any adjacent county, or partly within and partly in an adjacent county, not exceeding five hundred acres, either with or without buildings thereon erected, and to repair existing buildings, or erect or construct such new buildings and structures and make such improvements thereon as may be deemed necessary and convenient for a jail and/or workhouse. The title to said property shall be taken in the name of the city.
No lands shall be acquired without the limits of the county of such city unless the corporate authorities of the county and of any city, borough, or township, in which such lands are located, have, by resolution duly adopted, consented to such acquisition.
53 P.S. § 13642