Fort Osage National Historic Landmark
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Fort Osage National Historic Landmark

  • Learn more about the Reconstruction of Fort Osage!
  • Upcoming events at Fort Osage!
  • Learn more about the soldiers garrisoned at Fort Osage.
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Built under the direction of General William Clark, joint commander of the famous Lewis and Clark expedition, Fort Osage was established in 1808 as a military outpost in the newly acquired Louisiana Territory. The Fort’s purpose was to provide a military presence in the territory in order to assure Spain, France and Great Britain that the United States meant to protect its territory by military strength and to establish healthy relations with the Native American population in the territory.

Fort Osage has been partially reconstructed, and it is currently a park owned and operated by Jackson County Parks + Rec.
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Hours: Fort Osage is open to the public Tuesday through Sunday from 9:00 a.m. to 4:30 p.m. year-round.
Admission Fees: Adults: $8.00, Seniors (62 and over): $4.00, Youth (5-13): $4.00, Anyone under 5 is free.
Phone: (816) 650-3278
Address: 105 Osage Street, Sibley, MO 64088
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To ensure the safety of our guests and the integrity of this Historic Site, private pets are NOT permitted.​

This website is maintained by Fort Osage Volunteers.