The City of Portland shall be invested within its corporate limits and within the limits of property it holds or occupies outside its corporate limits, with authority to perform all public and private services, including those of an educational or recreational character as well as others, with all governmental powers except such as are expressly conferred by law upon other public corporations within such limits and subject to the limitations prescribed by the constitution and laws of the State, and with authority to acquire by purchase, condemnation or otherwise property within and without its limits, and to perform any function or service or to have any authority permitted by law outside its limits. [Ch. 1903, sec. 3; am. May 3, 1913, sec. 2; rev. 1914, sec. 3; 1928 pub., sec. 3; 1942 recod., sec. 1-103; rev. May 18, 1962.]