Fort Vancouver National Historic Site is e. on Mill Plain Blvd. off I-5 exit 1C, then s. on Ft. Vancouver Way and e. to 1001 E. 5th St., within Vancouver National Historic Reserve. Between 1825 and 1860 the 200-acre site was the center of the Hudson's Bay Co.'s fur-trading empire. In 1849 the first U.S. military post in the Pacific Northwest was founded nearby. The Hudson's Bay Co. stockade and several other buildings are reconstructed and furnished in period. The visitor center at 1501 E. Evergreen Blvd. contains historical exhibits.