Cliffe Fort stands as a formidable artillery fortification built in the 1860s on the south bank of the River Thames near Rochester, constructed to guard against French invasion during a period of international tension. The fort is particularly notable for housing the world's first guided torpedo system, designed by Louis Brennan and operational from 1887 to 1903, with its launch track still visible along the riverbank. Today, Cliffe Fort is designated as a Scheduled Monument by Historic England, reflecting its importance as both a military and technological landmark in Britain's defence history. Though no longer accessible to the public due to its deteriorated condition and private ownership, the fort remains visible from the Saxon Shore Way walking trail, offering a glimpse of Victorian coastal defence engineering.