Fir trees are a species of large evergreen conifer trees that are mainly found in North America, Europe, and Asia. Some of the tallest types of fir trees can reach impressive heights of 262 ft. (80 m) and some smaller kinds may only be 32 ft. (10 m) tall. Like most coniferous trees, firs have needle-like leaves that stay green all year long. Some species of fir tree such as the Fraser fir, balsam fir, and noble fir are popular Christmas trees.