Deer Plain, Illinois

The Golden Eagle-Toppmeyer Site is a pre-Columbian archaeological site located near the confluence of the Illinois and Mississippi Rivers in Calhoun County, Illinois. The site is associated with the Havana Hopewell culture and has two main components: the Golden Eagle earthwork and the Toppmeyer habitation site. The earthwork, which dates from the Middle Woodland period (150 BC - 450 AD), is the only geometric earthwork from the period in the central Mississippi River valley. Two mounds are incorporated in the rounded earthwork; one is located at the center, and one is located at a gap which has been called the "entrance" to the earthwork. The Toppmeyer habitation site, which overlaps the western edge of the earthwork, dates from the Late Woodland period (750 AD). The overall site was likely a regional transaction center at which extensive trade and cultural exchange among Hopewell people in the Illinois River valley took place. The site was added to the National Register of Historic Places on June 14, 1979.

The Crossroads is an unincorporated community in Calhoun County, Illinois, United States. The Crossroads is 4 miles (6.4 km) south-southeast of Brussels.

Golden Eagle is an unincorporated community in Calhoun County, Illinois, United States. The community is in southern Calhoun County 5 miles (8.0 km) south of Brussels, at the southernmost tip of the Calhoun County peninsula. Golden Eagle had its own post office until October 22, 2011; it still has its own ZIP Code, 62036.

Dardenne Creek is a stream in St. Charles and Warren counties in the U.S. state of Missouri. It is a tributary of the Mississippi River. The creek most likely has the name of the local Dardenne family. Many variant names have been recorded, including "Darden Creek", "Dardene River", "Dardenne River", "Dardonne Creek", and "Dardonne River".At Old Town, St. Peters, Missouri, Dardenne Creek has a mean discharge of 120 cubic feet per second.

Winneberg is an unincorporated community in Calhoun County, Illinois, United States. Winneberg is located on the Mississippi River at the southern tip of Calhoun County. The area of Winneburg was once a thriving town with a school, many houses, and a quarry until the early 1900s. When the quarry closed, many of the residents left and the town fell into ruin. In the early 2000s a developer bought the land where the town once stood and developed it into a subdivision with the same name of the previous town.

Quarry Township is one of eleven townships in Jersey County, Illinois, United States. As of the 2010 census, its population was 1,174 and it contained 610 housing units.

Kampville is an unincorporated community in St. Charles County, in the U.S. state of Missouri.The community has the name of the local Kamp family.

Apple Island is an island in the Mississippi River. The island is entirely within St. Charles County, Missouri, United States.The island most likely was named for the fact apples were shipped there.

Blase is an unincorporated community in St. Charles County, in the U.S. state of Missouri.

The Illinois River (Miami-Illinois: Inoka Siipiiwi) is a principal tributary of the Mississippi River at approximately 273 miles (439 km) in length. Located in the U.S. state of Illinois, the river has a drainage basin of 28,756.6 square miles (74,479 km2). The Illinois River begins with the confluence of the Des Plaines and Kankakee rivers in the Chicago metropolitan area, and it generally flows to the southwest across Illinois, until it empties into the Mississippi near Grafton, Illinois. Its drainage basin extends into southeastern Wisconsin, northwestern Indiana, and a very small area of southwestern Michigan in addition to central Illinois. Along its banks are several river ports, including the largest, Peoria, Illinois. Historic and recreation areas on the river include Starved Rock, and the internationally important wetlands of the Emiquon Complex and Dixon Waterfowl Refuge. The river was important among Native Americans and early French traders as the principal water route connecting the Great Lakes with the Mississippi. The French colonial settlements along these rivers formed the heart of the area known as the Illinois Country in the 17th and 18th centuries. After the construction of the Illinois and Michigan Canal and the Hennepin Canal in the 19th century, the role of the river as link between Lake Michigan and the Mississippi was extended into the era of modern industrial shipping. The Illinois now forms the basis for the Illinois Waterway, extending the river's capabilities for navigation and commercial shipping.

The Paris Mason Building is a historic house located at 100 N. Springfield St. in Grafton, Illinois. The house was built circa 1840 for Paris Mason, the brother of Grafton's founder James Mason, and was at the time a riverfront building which Mason used as a house and warehouse. The four-room hall and parlor house was built with rock-faced limestone; its only decorations are the limestone lintels and sills on the windows. The building is an early example of local limestone construction in Grafton, as it predates the regional boom in limestone quarrying and construction in the 1850s. The building was added to the National Register of Historic Places on February 6, 1994.

Two Branch Island is an island in the Mississippi River. The island is entirely within St. Charles County, Missouri.The island most likely was so named on account of its location between two tributaries of the Mississippi River.