Jackson House State Park Heritage Site is 3 mi. e. of I-5 exit 68, then .2 mi. s. to 4277 Jackson Hwy. The site features one of the oldest pioneer structures north of the Columbia River, a reconstructed homestead cabin built by pioneer John R. Jackson. An important meeting place during the organization of the Washington Territory, the small 1850 log cabin also served as a stopover for pioneer travelers, a post office, a grocery store, a hotel and a U.S. District Court. Its sparsely furnished interior can be viewed through the windows.