Lévis Forts

The Lévis Forts were a series of three forts located on the South Shore of the Saint Lawrence River in Lévis, Quebec, Canada. They were at shooting distance of one another which allowed the defense of a wide area without the cost of a continuous defensive wall. The first one was built (1865-1872) by the British Army and the other ones by private businesses (1865-1869). The costs were almost identical for all three, ranging from 57,600 to 59,762 pounds.

• http://en.wikipedia.org/wiki/Lévis Forts