United States Penitentiary, Leavenworth

Leavenworth () is the county seat and largest city of Leavenworth County, Kansas, United States and is part of the Kansas City metropolitan area. As of the 2020 census, the population of the city was 37,351. It is located on the west bank of the Missouri River. The site of Fort Leavenworth, built in 1827, the city became known in American history for its role as a key supply base in the settlement of the American West. During the American Civil War, many volunteers joined the Union Army from Leavenworth. The city has been notable as the location of several prisons, particularly the United States Disciplinary Barracks and United States Penitentiary, Leavenworth.

The Richard Allen Cultural Center opened in 1992 to highlight African-American history in Leavenworth, Kansas. In 1992, the museum opened in the former home of U.S. Army Captain William Bly, a Buffalo Soldier during World War I. The home is decorated to look as it would have in the early 1900s. In 2002, an addition was built to the front of the original home to display more items teaching about African-American history in Kansas. One display includes prints of original photographic plate negatives donated to the museum, called the Black Dignity Photos from the Mary Everhard collection. The photographs are African-American pioneers who lived in and around the Leavenworth area from 1870s to 1920s. Other items include military artifacts from African-American soldiers who served on Fort Leavenworth, including Colin Powell. The Richard Allen Cultural Center also contains a Ku Klux Klan costume and photographs depicting KKK activities in Leavenworth. One artifact is a news article discussing the public lynching of an African-American citizen of Leavenworth, Fred Alexander. The Richard Allen Cultural Center seeks to preserve these pieces of Leavenworth, Kansas history so that they are not forgotten. In 2016 a bronze bust of Cathay Williams, featuring information about her and with a small rose garden around it, was unveiled outside the Richard Allen Cultural Center.

Immaculata High School was a private, Roman Catholic high school in Leavenworth, Kansas, United States. It was located in the Roman Catholic Archdiocese of Kansas City in Kansas.

Fort Leavenworth National Cemetery is a United States National Cemetery located on Fort Leavenworth, a United States Army installation north of Leavenworth, Kansas. It was officially established in 1862, but was used as a burial ground as early as 1844, and was one of the twelve original United States National Cemeteries designated by Abraham Lincoln. The cemetery is the resting place of nine Medal of Honor recipients, but most are the less famous casualties of war. It was named for Brigadier General Henry Leavenworth, who was re-interred there in 1902 from Woodland Cemetery in Delhi, New York. Administered by the United States Department of Veterans Affairs, it occupies approximately 36.1 acres (14.6 ha) and was site to over 22,00 interments, as of 2020. It is maintained by Leavenworth National Cemetery.

Leavenworth USD 453 is a public unified school district headquartered in Leavenworth, Kansas, United States.

The AXA Building, at 205 S. 5th St. in Leavenworth, Kansas, was built in 1905. It was listed on the National Register of Historic Places in 1972.It is an ornate and two-and-a-half story red brick commercial building, with a 125 feet (38 m) facade along Fifth Street.It was designed by Leavenworth architect William B. Feth and built by contractor R. B. Yoakum. Known originally as the Eppenscheid Building. it was built for Charles Espenscheid, a St. Louis investor.It is Late Victorian in style.According to a guide to Kansas architecture, the building "stands out among its neighbors because of the inventiveness of its highly articulated Neo-classical ornament, particularly along the cornice, at its second-story bay windows, and around the lobby entry."

The United States Army Command and General Staff College (CGSC or, obsolete, USACGSC) at Fort Leavenworth, Kansas, is a graduate school for United States Army and sister service officers, interagency representatives, and international military officers. The college was established in 1881 by William Tecumseh Sherman as the School of Application for Infantry and Cavalry (later simply the Infantry and Cavalry School), a training school for infantry and cavalry officers. In 1907 it changed its title to the School of the Line. The curriculum expanded throughout World War I, World War II, the Korean War, and the Vietnam War and continues to adapt to include lessons learned from current conflicts. In addition to the main campus at Fort Leavenworth, the college has satellite campuses at Fort Belvoir, Virginia; Fort Gregg-Adams, Virginia; Fort Eisenhower, Georgia; and Redstone Arsenal, Alabama. The college also maintains a distance-learning modality for some of its instruction.

The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30, 1854, until January 29, 1861, when the eastern portion of the territory was admitted to the Union as the free state of Kansas. The territory extended from the Missouri border west to the summit of the Rocky Mountains and from the 37th parallel north to the 40th parallel north. Originally part of Missouri Territory, it was unorganized from 1821 to 1854. Much of the eastern region of what is now the State of Colorado was part of Kansas Territory. The Territory of Colorado was created to govern this western region of the former Kansas Territory on February 28, 1861. The question of whether Kansas was to be a free or a slave state was, according to the Compromise of 1850 and the Kansas–Nebraska Act, to be decided by popular sovereignty, that is, by vote of the Kansans. The question of which Kansans were eligible to vote led to an armed-conflict period called Bleeding Kansas. Both pro-slavery and free-state partisans encouraged and sometimes financially supported emigration to Kansas, so as to influence the vote. During part of the territorial period there were two territorial legislatures, with two constitutions, meeting in two cities (one capital was burned by partisans of the other capital). Two applications for statehood, one free and one slave, were sent to the U.S. Congress. The departure of Southern legislators in January 1861 facilitated Kansas' entry as a free state, later the same month.

The Combined Arms Research Library (CARL) at Fort Leavenworth, Kansas is a United States Army library that supports the United States Army Command and General Staff College. Its collection of over 300,000 books covers all aspects of military science: joint and combined operations; tactics and doctrinal development; leadership, intelligence, weapons, equipment, and training. The Archives and Special Collections house a unique collection of over 200,000 items and the documents collection consists of another 250,000. Each year, the CARL reference staff answers some 30,000 queries for soldiers, faculty and staff at Fort Leavenworth, Kansas and throughout the world via the Defense Digital Library Reference Service. Scholars, writers and the DoD community use the Combined Arms Research Library's archival materials, extensive research materials, and historical documents. The Combined Arms Research Library is one of the largest and most well respected libraries in the Army and was named the 2007 Federal Library of the Year by the Federal Library and Information Center Committee (FLICC).

The Carnegie Arts Center of Leavenworth, Kansas an historic building in namesake city. It was originally the Leavenworth Public Library. Constructed in 1900 with funds donated by Andrew Carnegie, the two-story brick and limestone building was the first Carnegie Library in Kansas. The architect was Marshall R. Sanguinet of Fort Worth, Texas, who designed the Dallas Public Library at the same time. It is listed on the State and National Registers of Historic Places. From 1902 to 1987, the building housed the Leavenworth Public Library. From 1987 to 2012, the Carnegie Arts Center was housed in this building. It was a nonprofit organization which taught visual arts, painting, art history, music, dance, pottery and drama in the Leavenworth community for 25 years. In 2012 upon the disbanding of the nonprofit organization, ownership of the building was reverted to the city of Leavenworth, Kansas.

Fort Leavenworth USD 207 is a public unified school district headquartered in Fort Leavenworth, Kansas, United States.

The Centennial Bridge is a through arch bridge road bridge over the Missouri River connecting Leavenworth, Kansas, and Platte County, Missouri. Constructed in 1955, it was initially a toll bridge. The bridge opened in 1955, a year after Leavenworth celebrated its centennial as the first city incorporated in Kansas. It is a two-span arch bridge connecting K-92 and Missouri Route 92. Its main span is 419.8 feet, and its total length is 2,571.2 feet. During the construction a spur of Route 45 called the "Leavenworth cutoff" was built to speed traffic to Kansas City, Missouri. The two-mile spur, even though it is in Missouri, was maintained by the city of Leavenworth until the tolls were removed from the Centennial Bridge in May 1977. The bridge is now maintained by the Kansas Department of Transportation.