Fort Denison, Military fort on a rocky island in Port Jackson, Australia
Fort Denison features a Martello tower fortress constructed from Sydney sandstone, rising 39 meters above the waters of Sydney Harbour.
The British colonial authorities transformed the island into a military fortification between 1841 and 1857 following concerns about potential American naval threats.
The Indigenous Eora people named this location Muddawahnyuh before European settlement, marking its presence in Aboriginal maritime territories.
The fort connects to central Sydney through regular ferry services from Circular Quay, allowing visitors to explore the military museum and historical exhibits.
A time gun fires daily at 1 PM from Fort Denison, maintaining a tradition that started in 1906 to help ships synchronize their navigation instruments.
Location: New South Wales
Inception: 1788
Elevation above the sea: 39 m
Part of: Sydney Harbour islands
GPS coordinates: -33.85478,151.22563
Latest update: May 26, 2025 21:32
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