Tags: Military Structure.
Cathcart Tower is a Martello tower located on Cedar Island in the St. Lawrence River off the eastern shore of Fort Henry in Kingston Ontario Canada. It is one of four such towers built in the 1840s to protect Kingston’s harbour and the entrance to the Rideau Canal. The other towers are: Fort Frederick Shoal Tower and Murney Tower. Built in 1848 this limestone tower is 11 m high and 16.5 m in diameter.