Code of Alabama
Chapter 2A - The Alabama State Flag Act.
Section 1-2A-6 - Display of Alabama State Flag - State Parks or Historic Sites.

(a) Each state park or historic site administrative building, which is located on park property and open to the general public, shall prominently display the Alabama State Flag, in accordance with appropriate flag display protocol, on a flag pole or flag poles located near the main entrance of each administrative building.
(b) Unless otherwise acquired pursuant to gift, donation, or other means, the flags and flag poles required by this section shall be purchased by the applicable park or historic site within three years after August 1, 2001.