Fort Sidney is a historic military fort located in Sidney, Nebraska. Built in 1867, it served as a key outpost during the Indian Wars and played a significant role in the westward expansion of the United States. The fort was primarily used to protect settlers and travelers along the Oregon Trail and California Trail. Today, Fort Sidney is preserved as a historical site, offering visitors a glimpse into 19th-century military life. The site features reconstructed buildings, interpretive displays, and guided tours, allowing people to learn about the fort's history and its impact on the development of the region.