One of Australia's best outdoor military museums
The Princess Royal Fortress boasts restored shore batteries, armouries, barracks, the 10th Light Horse display, trails and a collection of naval guns and torpedoes. The fortress is also home to the SE Asia Memorial, US Submariners Memorial and Merchant Navy Memorial.
The site now receives more than 25,000 visitors per year.
History
In 1791 Captain George Vancouver claimed the southern part of Western Australia for the British Crown. As he explored along the coast, he discovered one of the world's finest natural harbours and named it the Princess Royal Harbour and King George III Sound.

During the 19th century, the loss of this strategic port to an enemy naval squadron was recognised as a potential threat to the security of Australia. Consequently, as the first federal act - before federation - all the Australian states agreed to proportionally pay for the construction of a fort with the Imperial British Government supplying the guns. The Fort was opened in 1893 as the first federal defence of Australia, and today is called the Princess Royal Fortress.

From 1893 to 1956 the guns of King George Sound maintained their role as a deterrent, though never firing a shot in anger. It was neither age nor enemy that silenced the guns of the Sound but rather the advent of the missile era.

A sample of buildings & armory to be found in the park.

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