The Arnold–Park Log Home is a historic house in Portland, Oregon, preserved within Tryon Creek State Natural Area. Listed on the National Register of Historic Places, it holds a recognized place in the area's built heritage. Maintained by the State of Oregon, the house remains a rare historic feature within a protected natural landscape. Its importance today rests in the way it survives as part of a larger public setting, joining historic preservation with the conservation of the surrounding natural area rather than standing apart from it.