O'Fallon Township, St. Clair County, Illinois

O'Fallon Township High School is a public secondary school in O'Fallon, Illinois. In 2009, OTHS was ranked 49th out of the top 100 high schools in Illinois by the Chicago Sun Times.As of 2023, it is the second largest public high school in Illinois by enrollment outside of the Chicago area (Belleville High School-East being the largest).

McKendree University (McK), formerly McKendree College, is a private university in Lebanon, Illinois. Founded in 1828 as the Lebanon Seminary, it is the oldest college or university in Illinois. The school was renamed McKendree University beginning in the 2007–08 academic year. McKendree enrolls approximately 1,960 students representing 25 countries and 29 states. In the undergraduate program, on average there are 51% females and 49% males. The institution remains affiliated with the United Methodist Church.

The Tiedemann House is a historic house at 212 W. Washington St. in O'Fallon, Illinois. The house was built in 1884 for Ernst Tiedemann, a local merchant and a member of the city's board of trustees. Architect Henry E. Peipers of St. Louis designed the house using elements of the Italianate and Queen Anne styles. The house's Italianate features include its front porch, the three-sided bay window on its front facade, and its segmental arch windows. Its Queen Anne influence can be seen in the wooden balustrade on its porch and the gabled dormers with half-moon windows on each side of its hip roof.The house was added to the National Register of Historic Places on May 29, 2020.

O'Fallon is a city in St. Clair County, Illinois, United States. The 2020 census listed the population at 32,289. The city is the second largest city in the Metro East region and Southern Illinois. It sits 5 miles (8.0 km) from Scott Air Force Base and 18 miles (29 km) from Downtown St Louis. Like its namesake in St. Charles County, Missouri, O'Fallon is part of the St. Louis Metropolitan Statistical Area. This makes O'Fallon (along with the two Troys in Illinois and Missouri) one of the few pairs of like-named municipalities to be part of the same MSA.

Lebanon is a city in St. Clair County, Illinois, United States. The population was 4,418 at the 2010 census and had decreased to an estimated 4,256 as of 2018. Like many other places in "Little Egypt" or Southern Illinois, Lebanon was named after the Eastern Mediterranean country of the same name. It is a part of the Metro-East region of the Greater St. Louis metropolitan area. Lebanon is home to McKendree University, the oldest college in Illinois.

The Lebanon Historic District is a historic district composed of the areas of Lebanon, Illinois, developed prior to 1900. The district includes five distinct areas of Lebanon: the city's main commercial district, the neighborhood around McKendree University, two residential districts, and an archaeological site at the city limits. Development in Lebanon began in the 1820s, and McKendree University was founded in 1828. The oldest building from this period, the Mermaid House Hotel, is a Federal structure dating to 1830. The city received an influx of German immigrants from the 1830s onward, which affected the city's development. In the 1850s and 1860s, a railroad opened in the city and several local industries developed; however, the city retained the character of a small college town and never developed into an industrial or trade center.The historic district was added to the National Register of Historic Places on October 4, 1978.

Lebanon High School is the public high school of Lebanon Community Unit School District 9 in Lebanon, Illinois.

Mermaid House Hotel, located on East St. Louis Street in Lebanon, Illinois, was built in 1830 by the retired New England sea captain Lyman Adams. He named it for the mermaids he reported seeing at sea. The Mermaid House was visited by Charles Dickens in 1842 and received a mention in his book American Notes. The public-house was so very clean and good a one, that the managers of the jaunt resolved to return to it and put up there for the night, if possible. This course decided on, and the horses being well refreshed, we again pushed forward, and came upon the Prairie at sunset. Returning to Lebanon that night, we lay at the little inn at which we had halted in the afternoon. In point of cleanliness and comfort it would have suffered by no comparison with any English alehouse, of a homely kind, in England. The Mermaid House was added to the National Register of Historic Places on December 4, 1975.

Scott Field Historic District began as a World War I era air base built in 1917 near O'Fallon, Illinois, and was expanded and rebuilt before World War II. The district contains primarily that portion of the base built prior to 1941, and is now contained within the renamed, expanded, and operational Scott Air Force Base. The district boundaries include 107 contributing buildings and structures, and exclude post-1945 buildings built in the areas surrounding the 1917 Main Base area.Scott Field was named after Corporal Frank S. Scott, the first enlisted member of the United States Armed Forces to die in an aircraft accident.The district was listed on the National Register of Historic Places in 1994.

MidAmerica St. Louis Airport (IATA: BLV, ICAO: KBLV, FAA LID: BLV) is a public use airport next to Scott Air Force Base. It is located 18 nautical miles (33 km; 21 mi) east of downtown St. Louis and 14 nmi (26 km; 16 mi) east of the central business district of Belleville in St. Clair County, Illinois, United States. Opened in 1997, MidAmerica is the secondary domestic passenger airport for the Greater St. Louis metropolitan area, after the larger St. Louis Lambert International Airport. It is a joint-use airport and is currently served by one airline, Allegiant Air. The airport had 152,278 passenger enplanements in 2018 (302,000 total passengers), according to the Federal Aviation Administration. It was included in the National Plan of Integrated Airport Systems for 2017–21, which categorized it as a primary commercial service airport because it surpassed 10,000 annual enplanements. It is the fifth-busiest of the 12 commercial airports In Illinois.

The Military Surface Deployment and Distribution Command (SDDC) is the Army Service Component Command of the U.S. Transportation Command (USTRANSCOM) and is a major subordinate command to Army Materiel Command (AMC). This relationship links USTRANSCOM's Joint Deployment and Distribution Enterprise and AMC's Materiel Enterprise. The command also partners with the commercial transportation industry as the coordinating link between DOD surface transportation requirements and the capability industry provides.

Shiloh–Scott station is a St. Louis MetroLink station in Shiloh, Illinois, adjacent to Scott Air Force Base, after which the station is named. This station is the eastern terminus of the MetroLink system. It opened on June 23, 2003, as part of Phase 2 of the St. Clair County Extension, which extended MetroLink 3.5 miles (5.6 km) from College to Shiloh–Scott.The Shiloh-Scott station is the terminus for the St. Clair County Transit District's 14-mile (23 km) MetroBikeLink shared-use path system. The 2.9-mile (4.7 km) segment connecting the College station to Shiloh-Scott was opened in 2017.