Belvidere North State Street Historic District

The Apollo Theatre is an American theater in Belvidere, Illinois, built in 1921. The Apollo is a contributing property in downtown Belvidere's North State Street Historic District, on the north bank of the Kishwaukee River.: 18  On March 31, 2023, the Apollo's roof collapsed in the midst of a tornado outbreak, during a concert attended by 260 persons.

The Lampert-Wildflower House is a home in the U.S. city of Belvidere, Boone County, Illinois. The main, upright, portion of the house was constructed in 1838 and the wing section was added to the home during the 1860s. It passed through the hands of several owners until it was purchased by Phillip C. Lampert who is responsible for the wildflower covered lawn. The property contains five types of rare plants and is semi-wooded, shaded by 32 trees. The home is a distinct example of Upright and Wing construction, though it retains some elements of the Greek Revival style it was originally designed in. The wing section of the house features a front porch decorated with Gothic Revival and Queen Anne style elements. The house was listed on the U.S. National Register of Historic Places for its architectural significance in 2005.

The Belvidere U.S. Post Office is a historic building located in the Illinois city's downtown business district. It was built in 1911 and represents a good example of Classical Revival architecture. It was added to the National Register of Historic Places as United States Post Office-Belvidere in 2000.

Belvidere is a city in Boone County, settled on the Kishwaukee River in far northern Illinois, United States. Known as the 'City of Murals', Belvidere is home to several public art installations throughout the North and South State Street historic districts, which are on the national register of historic places. These historic districts are home to places like the Boone County Museum of History, The Funderburg Museum, several restaurants and bars, antique stores and Boutique stores. Popular festivities like Heritage Days are held yearly. The population was 25,339 as of the 2020 census. It is the county seat of Boone County. Belvidere is part of the Rockford, Illinois Metropolitan Statistical Area.

The old Belvidere High School is a complex of four connected buildings that reflect three different architectural styles: Classical Revival, Prairie School, and Art Deco. It is composed of the 1893 Garfield School, a 1900 powerhouse, the 1916 Belvidere High School, and the 1939 Belvidere High School Auditorium & Gymnasium.

Pettit Memorial Chapel or simply, Pettit Chapel, is one of the few chapels designed by architect Frank Lloyd Wright. The Pettit Chapel is located in the Belvidere Cemetery in Belvidere, Illinois, United States, which is in Boone County. It was listed on the U.S. National Register of Historic Places on December 1, 1978. The chapel is an early example of Frank Lloyd Wright's famed Prairie style. It is one of only two structures meant for a cemetery setting that Wright ever created.

Belvidere High School is located in at 1500 East Avenue, Belvidere, Illinois in Boone County.

Piscasaw Creek is a 31.6-mile-long (50.9 km) tributary of the Kishwaukee River in the U.S. states of Wisconsin and Illinois. Rising in Walworth County, Wisconsin, it passes through McHenry County, Illinois before discharging into the Kishwaukee in Boone County, Illinois. Piscasaw Creek's mouth is located near Belvidere, Illinois.

Belvidere North High School is the second high school in Belvidere, Illinois and part of the Belvidere Community Unit School District 100. It is right next to Seth Whitman Elementary School and Belvidere Central Middle School.

Belvidere Township is one of nine townships in Boone County, Illinois, United States. As of the 2020 census, its population was 29,441 and it contained 11,356 housing units.