Galop Island

Conestoga was an iron-clad wooden steam freighter constructed in 1878. In 1922, Conestoga caught fire at Cardinal, Ontario and sank.

Fort Lévis, a fortification on the St. Lawrence River, was built in 1759 by the French. They had decided that Fort de La Présentation was insufficient to defend their St. Lawrence River colonies against the British. Named for François Gaston de Lévis, Duc de Lévis, the fort was constructed on Isle Royale, 3 miles (4.8 km) downstream from the other fort. The fort surrendered after intense bombardment in August 1760 to the British and was renamed Fort William Augustus. The fort was abandoned in 1766. During the construction of the Saint Lawrence Seaway, the remains of the fort were destroyed and submerged beneath the waters of the river.

The Battle of the Thousand Islands was an engagement fought on 16–24 August 1760, in the upper St. Lawrence River, among the Thousand Islands, along the present day Canada–United States border, by British and French forces during the closing phases of the Seven Years' War, as it is called in Canada and Europe, or the French and Indian War as it is referred to in the United States. The engagement took place at Fort Lévis (about one mile (1.6 km) downstream from the modern Ogdensburg–Prescott International Bridge), Pointe au Baril (present-day Maitland, Ontario), and the surrounding waters and islands during the Montreal Campaign. The small French garrison at Fort Lévis held the much larger British army at bay for over a week, managing to sink two British warships and to cripple a third. Their resistance delayed the British advance to Montreal from the west.

Riverview Correctional Facility is a medium-security state prison for men in Ogdensburg, St. Lawrence County, New York, owned and operated by the New York State Department of Corrections and Community Supervision. Riverview was first opened as a 700-capacity prison in 1988, one of two upstate facilities funded by New York City to house its prisoners, in a special deal between the city and state. Together with Cape Vincent Correctional Facility the construction cost was $90 million. The two were "almost identical" to each other and to the state facilities at Bare Hill and Franklin, built in the same years.Ownership of both facilities was expected to revert to the state after seven years of operation. As of 2010 Riverview had a working capacity of 882.

Ogdensburg Correctional Facility was a medium-security state prison for male prisoners, located in the northern part of St. Lawrence County, New York, United States. The prison is located in the northeast corner of Ogdensburg near the St. Lawrence River. The facility closed in 2022.The facility housed one of New York State's centers for sex offenders civilly committed. The facility was also used as a Federal Immigration Detention Facility for Immigration Court matters heard in Ulster County, New York. Nearby Riverview Correctional Facility is also a medium-security prison.

The Ogdensburg–Prescott Border Crossing connects the cities of Ogdensburg, New York and Johnstown, Ontario on the Canada–United States border, and is located at the Ogdensburg–Prescott International Bridge. Even though it is located 3 miles (5 km) northeast of the cities, the bridge and the border crossing are named for Ogdensburg and Prescott because they were intended to replace ferry service between the two cities when the bridge was built in 1960. Prior to 1960, vessels crossed between Ogdensburg and Prescott (and border inspections were conducted) since 1800. The US border inspection station shown in the photo was built in 1960. The inspection canopy was replaced, and the building significantly upgraded and expanded in 2004. The Canada border station was replaced in 2012.

The Ogdensburg–Prescott International Bridge (also known as the St. Lawrence Bridge and the Seaway Skyway) is a suspension bridge connecting Ogdensburg, New York in the United States to Johnstown, Ontario (a few kilometres east of Prescott) in Canada. Designed by Modjeski & Masters and completed in 1960, it has six spans and a main span of 350.75 metres (1,150.8 ft) totaling 2.4 kilometres (1.5 mi) across the Saint Lawrence River and Saint Lawrence Seaway. The bridge is owned and operated by the Ogdensburg Bridge and Port Authority, which also owns and operates Ogdensburg International Airport, the Port of Ogdensburg-Marine Terminal Facility, Commerce Park, the Port of Waddington, a medium-heavy industrial park and two short line railroads. The Ogdensburg Bridge and Port Authority is a New York State public-benefit corporation.

The Johnstown District was a historic district in Upper Canada which existed until 1849.

Johnstown is a compact rural community in the United Counties of Leeds and Grenville, in eastern Ontario, Canada, part of the township municipality of Edwardsburgh/Cardinal. It is at the Canadian terminus of the Ogdensburg–Prescott International Bridge and at the southern termini of Highway 416 and Highway 16.

United Presbyterian Church is an historic Presbyterian church located at Lisbon in St. Lawrence County, New York. It was built in 1857 and is a rectangular gable roofed frame building, three bays wide and four bays deep. It was modified and enlarged in the late 19th century and early 20th century. Attached to the main block is a two-story Sunday school wing.It was listed on the National Register of Historic Places in 2007.

Lisbon Town Hall is a historic town hall building located in the Town of Lisbon in St. Lawrence County, New York. It was built in 1889 and is a large frame barn like structure with Queen Anne style decoration. It is a 2+1⁄2-story building with an exposed basement of local stone and a gambrel roof.It was listed on the National Register of Historic Places in 1980.

WQTK (92.7 FM) is a commercial radio station licensed to Ogdensburg, New York, and serving St. Lawrence County. Owned and operated by Community Broadcasters, LLC, WQTK broadcasts a talk radio format, using the slogan "The North Country's News And Talk Authority." WQTK has an effective radiated power of 3,000 watts. The radio studios and transmitter are on Knox Street near Champlain Street in Ogdensburg.