Agricultural Society Fair Grounds

St. Thomas Catholic High School for Boys is a former Catholic high school building at 921 W. State Street in Rockford, Illinois. The Diocese of Rockford opened the school along with a corresponding girls' school in 1929 to address rising enrollment. Rockford architect Wybe Jelles Van der Meer designed the school in the Gothic Revival style, which was commonly used for Catholic churches and schools. The school's design borrows elements from several subtypes of Gothic Revival, including Tudor Gothic and Collegiate Gothic. It includes a gable roof with a side gable at its eastern end, multicolored brick striping on the first floor, dormers on the north and south sides of the roof, a stone entrance bay with a turret, and trefoil arches and windows. The school closed in 1963 and has since been used as an office building by several Catholic organizations.The building was added to the National Register of Historic Places on October 4, 2018.

The Condon Brothers and R. H. Shumway Building, located at 624–642 Cedar Street in Rockford, Illinois, is the historic headquarters of the Condon Brothers and R. H. Shumway seed companies. The building was built in 1912 for the Condon Brothers, a family-run company founded two years earlier. In 1933, the Condon Brothers merged with the R. H. Shumway Company; while the two firms still advertised separately, they both operated out of the Cedar Street building. The firms mainly sold their seeds by mail order, sending out two million catalogs a year at their peak; they were among the largest seed companies in the world and helped make seed sales a key piece of Rockford's economy. The headquarters building was used to mail catalogs and process orders as well as to clean and refine seeds before sending them to customers. The companies closed in the 1980s; their headquarters is one of the few surviving buildings from Rockford's seed industry.The building was added to the National Register of Historic Places on August 18, 2015.

The Rockford Woman's Club is a women's club headquartered at 323 Park Avenue in Rockford, Illinois. The club was founded in 1897; originally known as the Federation of Woman's Clubs of Rockford, it united the city's nearly 20 active women's clubs into one organization. Women's clubs were popular nationwide in the late nineteenth and early twentieth centuries, and typically promoted women's rights and suffrage, community service, and the arts; the Rockford club was no different, as it created the city's first school lunch program and advocated for women's suffrage and eight-hour workdays. The club built a permanent clubhouse in 1918, which included an 800-seat community theater and a restaurant; the building has served as its headquarters ever since. Architects Tallmadge and Watson designed the Neoclassical building, while sculptor Nancy Cox-McCormack designed two bas-relief panels for its exterior. The restaurant, known as the Food Shop, became popular enough to merit an addition to the building in 1938; it operated until 1998, when the space was rented to a private restaurant.The club building was added to the National Register of Historic Places on December 31, 2020.

Rockford Elk's Lodge #64 is a historic building in Rockford, Illinois, United States originally used by a chapter of the Benevolent and Protective Order of Elks. It is individually listed on the National Register of Historic Places and is also part of the West Downtown Rockford Historic District.

The BMO Harris Bank Center (formerly known as Rockford MetroCentre) is a multi-purpose arena located in downtown Rockford, Illinois. It is currently home to the AHL's Rockford IceHogs hockey team. The arena formerly served as the home of several defunct minor league sports teams, including the Rockford Lightning basketball team, the Rock River Raptors indoor football team, and the Rockford Rampage indoor soccer team. The BMO Harris Bank Center also secured a spot in history when it hosted the first Arena Football League test game in 1986 between the Chicago Politicians and the Rockford Metros. Due to its outdoor appearance, it is often referred to as the "Big Orange Box", although IceHogs officials refer to the arena as "the Barnyard".

The Coronado Performing Arts Center (originally the Coronado Theatre), in Rockford, Illinois, is a 2,400-seat theatre, designed by architect Frederic J. Klein. The theatre cost $1.5 million to build, and opened on October 9, 1927.

The Chick House is a former hotel building constructed in 1857 in the city of Rockford, Illinois, United States. The building's construction was financed by three Rockford citizens and it operated as a hotel from its opening until 1951. The hotel was purchased by Thomas Chick in 1888 and he renamed it from the Griggs House to the Chick House. In 2004 the city of Rockford purchased two-thirds of the building and made some modifications to the structure. The building is a mesh between the Greek Revival and Italianate styles and feature simple ornamentation that contrasts with a neighboring building. The Chick House is a Rockford Landmark and was listed on the U.S. National Register of Historic Places in 1997.

Rockford is a city in Winnebago County, Illinois, located in the far northern part of the state. Situated on the banks of the Rock River, Rockford is the county seat of Winnebago County (a small portion of the city is located in Ogle County). The largest city in Illinois outside of the Chicago metropolitan area, Rockford is the fourth-largest city in the state and the 171st most populous in the United States. According to 2020 U.S. Census data, the City of Rockford had a population of 148,655 with an outlying metropolitan area population of 348,360. Settled in the mid-1830s, the position of the city on the Rock River made its location strategic for industrial development. In the second half of the 19th century, Rockford was notable for its output of heavy machinery, hardware and tools; by the twentieth century, it was the second leading center of furniture manufacturing in the nation, and 94th largest city. During the second half of the 20th century, Rockford struggled alongside many Rust Belt cities. Since the late 1990s, efforts in economic diversification have led to growth of automotive, aerospace, and healthcare industries, as well as the undertaking of various tourism and downtown revitalization efforts. Nicknamed the Forest City, Rockford is presently known for various venues of cultural or historical significance, including Anderson Japanese Gardens, Klehm Arboretum, Rockford Art Museum, Tinker Swiss Cottage, the BMO Harris Bank Center, the Coronado Theatre, the Laurent House, and the Burpee Museum of Natural History. Its contributions to music are noted in the Mendelssohn Club, the oldest music club in the nation, and performers such as Phantom Regiment and Cheap Trick. Notable outdoor or recreational spots near Rockford are Rock Cut State Park, Atwood Homestead County Forest Preserve, and Lowden State Park.

The William Brown Building is a historic commercial building in Rockford, Illinois, United States. Completed in 1892, it is considered a fine local example of Romanesque Revival architecture. It was one of the last major commercial buildings in Rockford between the Panic of 1893 and the Roaring Twenties.

The Rockford Morning Star Building, located at 127 N. Wyman St. in Rockford, Illinois, is a historic building originally used by the Rockford Morning Star.

The Ziock Building is a historic skyscraper in Rockford, Illinois. Throughout its history, it has also been known as the Amerock Building and the Tower Building. Originally the home to several manufacturing enterprises owned by William H. Ziock, Jr., the tower became the headquarters of Amerock in the 1940s. Last used for manufacturing in the 1950s, the building was later used for storage, leading to its abandonment. In 2015, the Ziock Building was purchased, commencing renovation and redevelopment of the site into a high-rise hotel and convention center, which opened in 2020.

The Beattie Park Mound Group is a grouping of Late Woodland period Indian mounds located in downtown Rockford, Illinois, United States.