Gundlach-Grosse House

Columbia is a city mainly in Monroe County with a small portion in St. Clair County in the U.S. state of Illinois, about 12 miles (19 km) south of St. Louis, Missouri. The population was 10,999 at the 2020 census.

Columbia High School is a public high school in Columbia, Illinois. It is part of Columbia Community Unit School District 4.

The Lunsford-Pulcher Archeological Site is a prehistoric archaeological site in rural Monroe and St. Clair counties in Illinois. The site was the location of a Middle Mississippian village which was probably a satellite community of Cahokia. Several pyramidal burial mounds are included in the site. Archaeological excavations at the site have also discovered the remains of houses and garden beds, making the site one of the few Mississippian villages at which garden beds have been found. The site has been known to European settlers since early settlement of the area in the late 18th century; despite being used for farmland, the site remains in good condition.The site was added to the National Register of Historic Places on July 23, 1973.

Sugarloaf Township is located in St. Clair County, Illinois. As of the 2010 census, its population was 7,322 and it contained 3,219 housing units.

New Hanover, Illinois is a small unincorporated community in Monroe County, Illinois, United States. It derives its name from Hanover, Germany, of which many of the immediate area's settlers, including notably Henry B. Stehr, its founder, were natives. It was platted and surveyed by Hugo Ropiquet, county surveyor, January 17, 1860. The first house, a frame dwelling, was built by John Karius about 1845. New Hanover also gave its name to a historic precinct of Monroe County, which was carved out of Bluff, and the former Eagle and Fountain Precincts (later renamed Columbia and Waterloo, respectively) in 1875 and comprised the territory surrounding it.

Dupo is a village in St. Clair County, Illinois, United States. The population was 4,138 at the 2010 census, an increase from 3,933 in 2000. The village was settled in about 1750 and was incorporated in 1907. Its modern name, adopted in the early 20th century, is shortened from Prairie du Pont ("Bridge Prairie").

Gibault Catholic High School is a private, Roman Catholic high school in Waterloo, Illinois. It is part of the Roman Catholic Diocese of Belleville.

The Jefferson Barracks Bridge, officially the Jefferson Barracks Memorial Arch Bridge, is a pair of bridges across the Mississippi River on the south side of St. Louis, Missouri metropolitan area. Each bridge is 3,998 feet (1,219 m) long with a 909-foot (277 m) long arch bridge spanning the shipping channel. The northern bridge was built in 1983, and the southern opened in 1992. A delay occurred during the construction of the southern bridge when a crane dropped a section of it into the river and it had to be rebuilt.The original Jefferson Barracks Bridge was a steel truss toll bridge that carried U.S. Route 50. Construction on that bridge began on August 5, 1942, and it opened two years later. A toll was charged until 1959, when the construction bonds were paid off. Prior to the construction of the original bridge, river crossings in this area were made via the Davis Street Ferry in the Carondelet neighborhood of St. Louis.The current bridge carries traffic for both Interstate 255 (part of the St. Louis beltway) and U.S. Route 50. However, I-255 itself was not built until a few years after the northern bridge opened in 1983.The names comes from the nearby Jefferson Barracks National Cemetery, itself originally part of the large Jefferson Barracks military complex, established in 1826 and decommissioned in 1946.

Martigney Creek is a stream in St. Louis County in the U.S. state of Missouri. It is a tributary of the Mississippi River. A variant spelling was "Martigne Creek". The creek most likely has the name of Jean B. Martigny, a pioneer landowner.

Koch is a former community in St. Louis County, Missouri. It was named for Robert Koch, a German bacteriologist. The location was at what is now Interstate 255 east of Route 231. It had a post office, which is now closed. The Robert Koch Hospital was located just off US 255 before it crosses the Jefferson Barracks Bridge in south county at 4101 Koch Road. The hospital was built by the city of St. Louis primarily as a quarantine facility for patients with a variety of easily transmissible diseases, including smallpox, yellow fever, and tuberculosis. There is a cemetery located on the grounds of this closed hospital, the building founded in 1875 with its last major renovation in 1949 and was demolished in 1989. The cemetery referred to as "Quarantine" cemetery is located on the 503 acres (2.04 km2) associated with this hospital. Many people believe this site is haunted. The hospital site was listed on the National Register of Historic Places in 1984. Nineteen buildings were constructed by 1939 and an 105-acre (0.42 km2) farm, post office, railroad stop, housing, and recreational facilities made the hospital almost self-sustaining. By the end of World War II new medications decreased the life-threatening effects of tuberculosis; from the 1950s to 1983 the hospital was used as housing for the indigent elderly. It also houses an antenna site for St Louis City Emergency Management.

Cliff Cave Park is a 525-acre public park located in St. Louis County, Missouri. The park is owned and operated by the St. Louis County Department of Parks and Recreation. It is named after Cliff Cave, a natural cave located in the park that is a historical and archaeologic site. The park contains woodlands, wetlands, and rocky hillsides and is adjacent to the Mississippi River. It has three trails: the Mississippi Trail, the Spring Valley Trail, and the River Bluff Trail. The Riverside Shelter overlooks the Mississippi River. An active train track runs through the park. Cliff Cave Park is part of the Mississippi River Greenway. The park won the "Best View of the Mississippi" award in 2009, which it was granted by The Riverfront Times.

Cliff Cave County Park is a 525-acre public park located in St. Louis, Missouri. The park is operated by St. Louis County Parks. It is named after Cliff Cave, a natural cave located in the park that is a historical and archaeologic site. The park contains woodlands, wetlands, and rocky hillsides and is adjacent to the Mississippi River. It has three trails: the Mississippi Trail, the Spring Valley Trail, and the River Bluff Trail. The Riverside Shelter overlooks the Mississippi River. An active train track runs through the park. Cliff Cave Park is part of the Mississippi River Greenway. The park won the "Best View of the Mississippi" award in 2009, which it was granted by The Riverfront Times.