Knobeloch–Seibert Farm

Belleville is a city and the county seat of St. Clair County, Illinois, United States. It is located within Greater St. Louis. The population was 42,404 at the 2020 census, making it the most-populated city in Southern Illinois and in the Metro East region of Greater St. Louis. Due to its proximity to Scott Air Force Base, the population receives a boost from military and federal civilian personnel, defense contractors, and military retirees. It is also the seat of the Roman Catholic Diocese of Belleville and the National Shrine of Our Lady of the Snows.

The Belleville Historic District is a historic district in Belleville, Illinois. The primarily residential district consists of an irregularly shaped area on the east side of Belleville. 70 buildings are included in the district, all of which are contributing buildings to its historic character. The homes in the district represent Belleville's residential development from 1830 to 1900. Many of the houses were designed in a vernacular cottage style popular among the city's German immigrants; while common in Belleville and other Metro-East cities, the style is little seen elsewhere in the state. Formal architectural styles such as Greek Revival and Italianate are also prevalent in the district.The district was added to the National Register of Historic Places on November 7, 1976.

The Gustave Koerner House is a historic house located at 200 Abend Street in Belleville, Illinois. The Greek Revival house was built in 1848-49 and rebuilt in 1854–55 after a fire. Gustave Koerner, a German immigrant and prominent Illinois politician, lived in the house from its construction to his death in 1896. Koerner served as Lieutenant Governor of Illinois, sat on the Illinois Supreme Court, and was a member of the Illinois House of Representatives. He was also a political ally of Abraham Lincoln during his senatorial and presidential campaigns and convinced many German-American voters to support Lincoln. During the Civil War, Koerner served as United States Minister to Spain and thereafter mounted a failed campaign for Governor of Illinois.The house was added to the National Register of Historic Places on September 17, 2004. It was converted in 1984 and is currently separated into rental units.It is no longer rental units. The Koerner house is being restored to its original appearance by the Historical Society of St. Clair County. It will be maintained as a museum.

The Diocese of Belleville (Latin: Diœcesis Bellevillensis) is a Latin Church ecclesiastical territory, or diocese, of the Catholic Church in the Southern Illinois region of the United States. It is a suffragan see in the ecclesiastical province of the metropolitan Archdiocese of Chicago. The mother church for the diocese is the Cathedral of Saint Peter in Belleville. Michael G. McGovern is the current bishop of Belleville.

The St. Clair County Courthouse is a government building in Belleville, the county seat of St. Clair County, Illinois, United States. Built in 1976, it is the fifth courthouse in the history of the county, and one of two that still stands.

The Cathedral of Saint Peter is the mother church of the Roman Catholic Diocese of Belleville, located in Belleville, Illinois. The cathedral parish of Saint Peter was founded in 1842 at a location east of the present structure, and named after Saint Barnabas the Apostle; it was rededicated to Saint Peter in 1847. By 1863, the congregation recognized the need for a larger structure. It constructed a brick church on the cathedral's present site which it dedicated in 1866.In 1887, Pope Leo XIII created the Diocese of Belleville from the southern portion of the Diocese of Alton (now the Diocese of Springfield) and named Reverend John Janssen as the first bishop. Janssen chose St. Peter's as his cathedral. On January 4, 1912, around 6 p.m., neighborhood children noticed a fire in the upper portion of the building. Although they arrived quickly, firefighters were hampered in their efforts to extinguish the blaze by a lack of water pressure to reach the 80 ft (24 m) roof and the bitter 15 °F (−9 °C) temperatures. Water company officials blamed the poor water pressure on a broken valve at the water station. Soon, the fire burned through the roof timbers, which fell and ignited other parts of the structure. When the fire was extinguished, all that remained were the exterior walls and bell tower. One local newspaper estimated the damage at US$100,000 and said that insurance would cover only $40,000 of the repairs.The present structure's Gothic architecture was modeled after that of the Cathedral of Exeter, England. It was designed by the architect Victor Klutho. The brick walls were covered with Winona split-face dolomitic limestone accented with Indiana limestone in 1956. The sanctuary was renovated in 1968, to conform to directives of the Second Vatican Council, and the south end of the cathedral expanded to increase capacity to 1,270. A mass in January 2012, marked the centennial of the fire and rebuilding, and also reinstallation of the pulpit and cathedra canopy which were removed during the 1968 work.The cathedral houses a three-manual, 40-rank organ by the M. P. Moller Company that dates from 1968. A second console has been added along with four ranks of pipes.

Hotel Belleville is a historic hotel building at 16 S. Illinois Street in Belleville, Illinois. The hotel was built in 1930–31 to replace the city's previous hotel, the Belleville House; like its predecessor, the hotel marketed itself as the most luxurious and modern hotel in Belleville. Architects Manske & Bartling designed the building in the Art Deco style; their design included first-floor window bays with terra cotta blocks, brick pilasters above the entrance, ornamental brickwork on the upper floors, and a parapet. The hotel's amenities included a restaurant and cocktail lounge, banquet and event space, office space for community organizations, and storefronts for local businesses. In the decades after it opened, the building served both as a center of Belleville's social life and a home for regional conventions. The hotel operated until 1961, when it was converted to an assisted living facility for the elderly.The building was added to the National Register of Historic Places on June 20, 2018.

Swansea station is a St. Louis Metrolink station. The station is located in Swansea, Illinois between Illinois State Routes 159 and 161. This is primarily a commuter station and has 716 park and ride spaces and 25 long-term spaces. In 2019, an $11 million transit-oriented development called Metro Landing of Swansea opened on a vacant lot next to the park and ride lot and caters to adults seeking an independent lifestyle at an affordable cost.

Lindenwood Stadium is a sport stadium in Belleville, Illinois. The facility is primarily used by the Lindenwood University-Belleville athletic teams. The turf is not the normal selection of green, but is instead alternating red and gray. It has been called "The nation’s most original (hideous) football field." As of the 2012 season, Lindenwood is only one of four programs to have the field color other than the traditional green and the only NAIA school to do so. The first college football game played at the stadium was a 43–37 victory over the Avila Eagles on September 1, 2012.The stadium is also used for local high school sporting events and other community events.

St. Clair Township is located in St. Clair County, Illinois. As of the 2010 census, its population was 35,498 and it contained 15,366 housing units. St. Clair Township formed from a portion of Belleville Township on October 5, 1885.

Belleville station is a St. Louis MetroLink station. The station bisects Scheel Street in the northern section of Belleville, Illinois approximately one-mile (1.6 km) from the center of town. It has a MetroBus transfer and a large parking lot on the southwest side of the tracks that features 287 park and ride spaces and 34 long-term spaces. This station also includes a small retail building with four storefronts near the bus boarding plaza. In 2022, the concrete area between the bus bays and MetroLink entrance was updated into an interactive space that boasts a vibrant-colored “Art Grows in Belleville” theme and includes new custom bike racks, shade structures, a Belleville city logo sign, benches, planters and elevated window artwork. The third "Transit Stop Transformation" project to be completed, it was unveiled on June 26, 2022, by Citizens for Modern Transit, the St. Clair County Transit District, AARP in St. Louis, and Metro Transit.

Swansea is a village in St. Clair County, Illinois. It is a part of the St. Louis metropolitan area and Metro East in southern Illinois. It is surrounded by the communities of Fairview Heights, Belleville, O’Fallon, and Shiloh. The population was 13,430 at the 2010 census, an increase from 10,579 in 2000.