Understanding Flues. A flue is simply a passage for conveying exhaust gases from an appliance to the outdoors. A flue may be a duct, pipe, vent, or chimney. An unlined chimney is technically a flue, even though an unlined chimney is a fire hazard. This can cause confusion, as many view flues not just as a passage for venting, but as a safe passage for venting.
Show map of the US. Fort Ontario is a historic fort situated by the City of Oswego, in Oswego County, New York in the United States of America. It is owned by the state of New York and operated as a museum known as Fort Ontario State Historic Site.
The restored fort is open to the public as a state historic site. It was listed on the National Register of Historic Places in 1970. In 2010, Fort Ontario was one of the state-funded historical sites named by Governor David Paterson as being potentially unfunded because of the budget crisis faced by New York State.