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.
Fort Hamilton. Centrally located in middle of the New York City Metropolitan area, Fort Hamilton is surrounded around the quaint historic communities of Bay Ridge, Dyker Heights and Bensonhurst, just southwest of Brooklyn, New York. The cornerstone of this coastal defense fort was set in 1825, and the first garrison flag was raised in 1831. While many of the original structures are gone, some having yielded to the construction of the Verrazano Narrows Bridge, still part of the old fort remains on the grounds of the United States Army Fort Hamilton Garrison.