Standard Yarn Company Building

Oswego Armory is a historic National Guard armory located at Oswego in Oswego County, New York. It is a brick and stone castle-like structure built in 1906–1908. It was designed by State architect George L. Heins. It consists of a 2+1⁄2-story administration building with an attached large, gable-roofed drill shed. The building features a 5-story octagonal tower at the northwest corner.It was listed on the National Register of Historic Places in 1988.

Oswego () is a city in Oswego County, New York, United States. The population was 16,921 at the 2020 census. Oswego is located on Lake Ontario in Upstate New York, about 35 miles (56 km) northwest of Syracuse. It promotes itself as "The Port City of Central New York." It is the county seat of Oswego County. The city of Oswego is bordered by the towns of Oswego, Minetto, and Scriba to the west, south, and east, respectively, and by Lake Ontario to the north. Oswego Speedway is a nationally known automobile racing facility. The State University of New York at Oswego is located just outside the city on Lake Ontario.

U.S. Customhouse is a historic customhouse located at Oswego in Oswego County, New York. It is a three-story, flat roofed, rectangular stone building flanked by identical two-story wings. The original structure was built in 1858 and the wings added in 1935. It was designed by architect Ammi B. Young (1798–1874).It was listed on the National Register of Historic Places in 1976.

Hunter-Oliphant Block, also known as Browne-Davis Furniture Store, is a historic commercial building located at Oswego in Oswego County, New York. It consists of adjacent brick buildings under single ownership; the three-story Hunter Building, built in 1882, and the Oliphant Building, built in 1880 as a three-story building with a fourth story added in the 1890s. The buildings exhibits Italianate design details. The first floor has cast-iron storefronts. The buildings have a common history dating to 1909 when they were combined as a single furniture store.It was listed on the National Register of Historic Places in 1995.

Oswego City Hall is a historic city hall located at Oswego in Oswego County, New York. It was built in 1870 and is a 2+1⁄2-story masonry, mansarded structure with a distinctive central clock tower. It was designed by architect Horatio Nelson White (1814–1892).It was listed on the National Register of Historic Places in 1973.

John B. and Lydia Edwards House is a historic home located at Oswego in Oswego County, New York. It is a two-story, rectangular frame residence built between 1834 and 1835. Its owner John B. Edwards was abolitionist Gerrit Smith's agent at Oswego and the house is well documented as a way station on the Underground Railroad.It was listed on the National Register of Historic Places in 2001.

Oswego City Library is a historic library building located at Oswego in Oswego County, New York. It has also been known as the Oswego School District Public Library. It was built in about 1855 and is a two-story brick structure over a full basement. It features a distinctive castellated style with exterior battlements, machicolations, tower, turrets, corbels, and arcaded windows. It was a gift from Gerrit Smith, who gave $25,000 for the building construction and $5,000 for books.The library is credited for being the oldest public library in the United States that maintains operations out of its original building.It was listed on the National Register of Historic Places in 1971.

Kingsford Historic District is a national historic district located at Oswego, Oswego County, New York. It encompasses 76 contributing buildings in a predominantly residential section of Oswego. It developed between about 1830 and 1910, and includes notable examples of Italianate, Romanesque Revival, Colonial Revival, and Tudor Revival style architecture. Located in the district is the separately listed Kingsford House. Other notable buildings include the former St. Matthew's Lutheran Church (1888), 40 West Oneida Street (1898) designed by Claude Fayette Bragdon, the former Public School #3 (1860s), and West Baptist Church (1867) designed by Andrew Jackson Warner.It was added to the National Register of Historic Places in 2014.

Kingsford House is a historic home located at Oswego in Oswego County, New York. It is a large 2+1⁄2-story brick residence. Built about 1870 in the Italianate style, it was extensively reconfigured and enlarged in 1912–1913 in the Tudor Revival style. Along the north and east edge of the property is a terrace wall built of cut limestone blocks and topped by a cast and wrought iron fence.It was listed on the National Register of Historic Places in 1997.

Richardson-Bates House is a historic home located at Oswego in Oswego County, New York. It is constructed primarily of brick and built in two stages. The main section is a 2+1⁄2-story, Tuscan Villa style brick residence with a gable roof and 4-story tower designed by architect Andrew Jackson Warner about 1867. The interior features carved woodwork by Louis Lavonier. The South wing addition included a private library, formal dining room and kitchen that was completed in 1889.The house and its contents were donated to the Oswego Historical Society in 1947. It was listed on the National Register of Historic Places in 1975.

The Buckhout–Jones Building is a historic commercial building located at 5-13 West Bridge Street in Oswego, Oswego County, New York.

Oswego County Courthouse is a historic courthouse located at Oswego in Oswego County, New York. It was built in 1859-1860 and altered in 1891 and again in 1962. The two story building rises above a cruciform plan and is constructed of load bearing masonry walls faced with smooth ashlar limestone. It features a portico surmounted by a domed cupola. It was designed by architect Horatio Nelson White (1814–1892).It was listed on the National Register of Historic Places in 2000.