A modular free standing structure and an adjustable footing configured to support the modular free standing structure are described. The structural footing comprises a support member having a support surface configured to provide vertical support to one or more modular platform structures, a base member, and an adjustable leveling mechanism disposed between the support member and the base member, and configured to level adjoining modular platform structures by adjusting a height of the support member relative to the base member about a vertical axis of the structural footing.