Trees are characterized by interesting structural features which produce an efficient overall structural behavior. As a result, trees are able to survive substantial wind loading. To study the structural behavior of trees a structural analysis model is necessary. However, the geometric complexity of a tree (because of the system of roots, trunk, branches, and leaves) gives rise to difficulties and time-cost to build such a model manually. This project aims to build a three-dimensional tree model using a photogrammetric range imaging technique called “Structure from Motion” (SfM). A general understanding of both physical and mechanical properties of tree will reveal the wind-withstanding strategies developed by trees and may shed light on how to improve structural designs.