Poplar Grove Vintage Wings and Wheels Museum

Poplar Grove Airport (FAA LID: C77) is a small general aviation airport located in Poplar Grove, Illinois, United States. The airport was founded in 1972 as Belvidere Airport and renamed in 1994. It is located 3 miles south of Poplar Grove, and 3 miles north of Belvidere. The airport is privately owned and open to the public. It is the home of the Poplar Grove Vintage Wings and Wheels Museum and BelAir Estates, a residential fly-in neighborhood. The airport was named 2015 Illinois Private Airport of the Year by the Illinois Department of Transportation's Division of Aeronautics.

Timberlane (locally known as Timberline) is a village in Boone County, Illinois, United States. It is part of the Rockford, Illinois Metropolitan Statistical Area. The population was 906 at the 2020 census.

Poplar Grove (founded in 1859) is a village located in Poplar Grove and Belvidere Townships, Boone County, Illinois, United States. It is part of the Rockford Metropolitan Statistical Area, and of the gated community Candlewick Lake. The population was 5,049 at the 2020 census.

Boone County is a county located in the U.S. state of Illinois. As of the 2020 census, the population was 53,448. Its county seat is Belvidere.Boone County is included in the Rockford, IL Metropolitan Statistical Area.

Candlewick Lake is an unincorporated, gated community in Boone County, Illinois, United States. Candlewick Lake is located between Poplar Grove and Timberlane; the community includes a lake with the same name. It is part of the Rockford, Illinois Metropolitan Statistical Area. The gated community also features a community pool, beach, recreation center, emergency rescue squad center, parks & dog parks, walking trails, golf course, tennis courts, and Bar & Grill (In Savannah Oaks). Savannah Oaks Bar & Grill and golf course are located within the gates of Candlewick Lake in the northern region. Water source provided by Aqua Illinois. Privatized water corporation. Residents currently fighting to remove.

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.

Poplar Grove Township is one of nine townships in Boone County, Illinois, USA. As of the 2020 census, its population was 5,131 and it contained 1,834 housing units. Poplar Grove Township was formed from parts of Caledonia Township and Boone Township after 1921.

Russellville is an unincorporated community in Boone County, Illinois, United States. Russellville is southeast of Poplar Grove.

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.

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 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.

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.