Wis. Const. art. XI, § 2
Wis. Const. art. XI, § 2. Property taken by municipality
[As amended April 1961] No municipal corporation shall take private property for public use, against the consent of the owner, without the necessity thereof being first established in the manner prescribed by the legislature. [1959 J.R. 47, 1961 J.R. 12, vote April 1961]