Fort Denison in Sydney Harbour with the Sydney skyline

Fort Denison 33°51′18″S, 151°13′32″E is a former defensive facility occupying a small island located north of the Royal Botanical Gardens in Sydney Harbour. Originally named Pinchgut (owing to the poor quality and quantity of food given to imprisoned convicts), the island was used as a place of confinement for recalcitrant convicts during the early period of British settlement. The fortress, which features a distinctive martello tower, was built in the mid 19th century as a defence against a feared Russian invasion during the period of the Crimean War, and occupies the entire island. It is reputedly the last martello-style fortification built by the British Empire. Image File history File links Download high resolution version (1200x800, 140 KB)Fort Denison in Sydney Harbour with the Sydney skyline. ... Image File history File links Download high resolution version (1200x800, 140 KB)Fort Denison in Sydney Harbour with the Sydney skyline. ... Sydney Opera House and Harbour Bridge located on Port Jackson Port Jackson is the natural harbour of Sydney, Australia, also known as Sydney Harbour and is the largest natural harbour in the world. ... Martello towers are small defensive forts built by the British Empire at the time of the Napoleonic Wars. ... Combatants United Kingdom, France, Ottoman Empire, Sardinia Imperial Russia Strength 250,000 British 400,000 French 10,000 Sardinian 1,200,000 Russian Casualties 17,500 British 30,000 French 2,050 Sardinian killed and wounded 256,000 killed and wounded The Crimean War lasted from 28 March 1854 until... The British Empire was, at one time, the foremost global power, and the most extensive empire in the history of the world. ...

Fort Denison is now a tourist attraction.