Brockville Tunnel

The Brockville Railway Tunnel, also called the Brockville Tunnel, is a former railway tunnel located beneath the downtown of Brockville, Ontario, Canada. It is the first railway tunnel built in Canada; construction began in September 1854 and the first train passed through the tunnel on December 31, 1860. Since 2017 it has been opened to the public as a free seasonal tourist attraction.

The tunnel runs in a north/south direction from Water Street, for a distance of 527 m. It passes underneath what is now Brockville City Hall, built in 1863–64 as the Victoria Hall. It was built by the Brockville and Ottawa Railway. The tunnel was designed to provide a rail link from the timber trade of the Ottawa Valley to the Brockville port facilities on the St. Lawrence River ship route.