Nothing like a government that can rip the money from the people through confiscatory taxation then turn around and “buy” their lands out from under them.
The federal government was not supposed to own ANY lands within any State outside of DC.
Art I, Sec 8, Cl 17 gives the feds the right to own certain places within states like “Forts, dock-Yards”, and “other needful buildings” if “purchased by the Consent of the Legislature of the State.”
If there are no constitutional grounds for the feds owning the land or the building, then HASTA LA VISTA, BABY!