Fort Frederick in Port Elizabeth, South Africa, was built in 1799 in order to stop the French from conquering the Cape Colony during the Napoleonic wars and played a vital role in establishing British rule in South Africa in combination with the Battle of Blaauwberg.

Fort Frederick was built in 1799 on a natural vantage point overlooking the strategic Algoa Bay.

Named after Frederick, Duke of York and Albany, commander-in-chief of the British Army, it was built by troops sent to Algoa Bay to prevent a possible landing of French troops, under Napoleon to assist the Graaff-Reinet rebels during the Napoleonic wars, which event is often regarded to be the beginning of the British rule in the Cape Colony.

The museum collection now also contains a varied selection of muzzle-loaders dating from the later part of the eighteenth century.

Captain Evatt played an important role in overseeing the arrivals of the Settlers in 1820.