The City may acquire, by purchase, gift, devise or condemnation and property, corporal or incorporeal, either within or without its corporate boundaries, which may be needed by the City for any public use or purpose. Easements for slopes, fills, sewers, building lines, poles, wires, pipes, and conduits for water, gas, heat, and power may be acquired by gift, devise, purchase or condemnation in the manner provided by law.