The city may acquire, by purchase, gift, devise, or condemnation, any property, corporeal or incorporeal, either within or without 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, purchases or condemnation in the manner provided by law.