Walton and Willett Stone Store

Woodruff Block is a historic commercial building located at Oswego in Oswego County, New York. It is a four-story masonry structure built about 1840 and modified between 1900 and 1930. It features rectangular cut stone columns with Doric capitals in the Greek Revival style. When built it was located strategically at the terminus of the 1828 Oswego Canal.It was listed on the National Register of Historic Places in 1995.

Market House, also known as The Market Hall and The D.L.& W. Hall, is a historic market building located at Oswego in Oswego County, New York. It was built in 1835 and is a massive brick and stone structure overlooking the Oswego River. The structure originally housed several government entities including city hall. A new city hall was constructed in 1870 and completed in 1872. A section of the basement is believed to have been used as a jail. In 1864 the city sold it to the Oswego and Syracuse Railroad, that used it for the next 80 years as office and storage space. The railroad upgraded the building with a bracketed cornice and elaborate cupola.It was listed on the National Register of Historic Places in 1974. The structure is privately owned, and a bar located on the north-most section of the first floor, named "Old City Hall" has been there for many years.

Tanner Block is a historic commercial building located at Oswego in Oswego County, New York. It was built in 1890 and is a four-story brick structure constructed in an eclectic Victorian style. It measures 44 feet wide and 100 feet deep. It originally housed a hardware store. It was updated in 1926 to house a furniture store and again updated in the 1960s.It was listed on the National Register of Historic Places in 2009.

Fort Oswego was an 18th-century trading post in the Great Lakes region in North America, which became the site of a battle between French and British forces in 1756 during the French and Indian War. The fort was established in 1727, on the orders of New York governor William Burnet, adjacent to a 1722 blockhouse that had originally been a way station for French traders. The log palisade fort established a British presence on the Great Lakes. In 1756, the fort's garrison of British soldiers from the 50th and 51st regiments were easily defeated by a combined French and Native American force. More than one hundred British soldiers were killed, many of them after the fort had been formally surrendered. The French took a further 1,500 British prisoners, and destroyed the fort itself. The site is now included in the city of Oswego, New York.

The Battle of Fort Oswego was one in a series of early French victories in the North American theatre of the Seven Years' War won in spite of New France's military vulnerability. During the week of August 10, 1756, a force of regulars and Canadian militia under General Montcalm captured and occupied the British fortifications at Fort Oswego, located at the site of present-day Oswego, New York. In addition to 1,700 prisoners, Montcalm's force seized the fort's 121 cannons. The fall of Fort Oswego effectively interrupted the British presence on Lake Ontario and removed it as a threat to the nearby French-controlled Fort Frontenac. The battle was notable for demonstrating that traditional European siege tactics were viable in North America when applied properly in the right circumstances and terrain.

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

Oswego Theater, now known as Oswego 7 Cinemas, is a historic movie theater located at Oswego in Oswego County, New York. It was designed in 1940 in the Art Deco style and opened in 1941. The front features bands of yellow, red, and dark red brick that create broad horizontal and perpendicular belts. A pair of cast stone, accordion pleated vertical stripes are included on the facade. It was designed by architect John Eberson (1875–1964).It was listed on the National Register of Historic Places in 1988.

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.

The Port of Oswego is the main waterfront area of the City of Oswego in Oswego County, New York. Over the course of its history, the Port of Oswego has been the focus of military conflict and conquest, asite of record trade revenue, and a significant part in the History of American expansion and industrialism. Today the Port of Oswego is a shadow of its once-powerful self but still proves to be useful as trade continues in the central New York region. Early explorers in the 17th century of Dutch, French, and English origin realized the value of an all-water route connecting the French settlements along the St. Lawrence River with the Dutch settlement of New Amsterdam. This would create a trade route that would stretch well over 500 miles (800 km) and give the controller of this route a significant advantage for turning profits in the New World. The Port of Oswego would become the focal point of this perceived route and bring the country that owns it almost infinite resources for constructing an empire in the New World. The history of activity at the Port can be divided into four great periods of development: The Fur Trading Era, The Salt Era, The Lumber and Grain Era, and The Coal Era.

Derrick Boat No. 8, also known as DB 8, is a historic floating derrick located at Oswego, Oswego County, New York. It was built in 1927, and it is one of the few surviving steam-powered floating derricks to have worked on the New York State Barge Canal. It has a 75 foot by 28 foot hull composed of both riveted and welded heavy steel plate. The site of the vessel's caretaker is the H. Lee White Marine Museum.It was added to the National Register of Historic Places in 2015.

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.