Sydney Harbour is famous for the Harbour Bridge and Opera House, but there is another side of the harbour that is easy to miss—the islands. Some are peaceful picnic spots, while others are packed with history, old buildings, and incredible harbour views. If you are planning a Sydney trip and want something different from the usual attractions, visiting one of the harbour islands can be a great addition to your itinerary. Here are eight islands worth knowing about.
Cockatoo Island, also known as Wareamah, is one of the most interesting places to explore in Sydney Harbour. It has a strong connection to Sydney’s convict and industrial history and was later used as a major naval shipyard.
What I like about Cockatoo Island is that it feels completely different from central Sydney even though it is only a short ferry ride away. You can walk around the historic industrial areas, see old structures and docks, enjoy harbour views, or simply spend some time by the water.
The island also offers accommodation, camping, cafés, picnic areas and heritage experiences, so it can work as either a short day trip or a longer stay.
- Explore the historic convict and industrial areas
- Walk around the waterfront
- Visit heritage buildings and old shipyard areas
- Have a picnic
- Enjoy harbour views
- Stay overnight or camp
- Join a guided history experience
- Stop at one of the island’s cafés
- How to get there: Public ferries are the easiest option. The official Cockatoo Island visitor information says F3 and F8 ferry services operate to the island, with services from places including Circular Quay and Barangaroo. Ferry schedules can change, so check the current timetable before travelling.
- For current visitor information, see the official Cockatoo Island visitor guide.
2. Shark Island – Boowambillee
If your idea of a perfect island visit is a picnic surrounded by water and Sydney Harbour views, Shark Island is worth considering.
Known as Boowambillee, the island is located about one kilometre from Rose Bay. It is a relatively small island, but its position gives visitors excellent views across the harbour. There are grassy areas, picnic facilities and places where you can enjoy the waterfront.
One of the nicest things about Shark Island is that you don’t need to plan a complicated sightseeing schedule. You can bring food, find a pleasant spot and simply enjoy the scenery.
The island’s foreshore also has historic grottos built in the early 1900s.
- Have a harbour picnic
- Enjoy panoramic water views
- Walk around the foreshore
- Explore the historic grottos
- Take photographs
- Relax away from the busy city streets
- Enjoy views toward Sydney’s harbour landmarks
- Important visitor information: Public visitors to Shark Island currently need to pay a $7 per-person landing fee, according to NSW National Parks. Landing fees are separate from the NSW Parks Pass. Access can also be affected by private events or temporary closures, so check the official alerts before making plans.
3. Clark Island
Clark Island is a smaller and quieter Sydney Harbour destination, making it particularly appealing if you want somewhere peaceful for a picnic.
The island sits near Double Bay and has views toward some of Sydney’s most recognisable landmarks, including the Sydney Opera House and Harbour Bridge. Despite being less than a hectare in size, its harbour setting makes it a memorable place to spend a few hours.
Clark Island also has an interesting connection to Sydney’s early colonial history. It was cultivated as a vegetable garden in 1789 by Lieutenant Ralph Clark, who had arrived with the First Fleet.
- Enjoy a picnic
- Take harbour photographs
- Admire the Opera House and Harbour Bridge views
- Relax on the grassy areas
- Explore the island’s historical setting
- Enjoy a quiet break from central Sydney
- Clark Island is accessible by watercraft. NSW National Parks states that visitors can use a water taxi, private vessel or kayak, while the island’s wharf is for passenger loading and unloading rather than mooring.
- There is currently a $7 per-person landing fee, and the island is open from sunrise to sunset when not affected by a closure or private event.
- Check the official Clark Island visitor information before travelling.
4. Goat Island – Me-mel
Goat Island, traditionally known as Me-mel, has a very different character from the picnic islands. Its importance comes largely from its Aboriginal and colonial history.
NSW National Parks notes that Me-mel was associated with the Cadigal people and was once inhabited by Bennelong and Barangaroo. Later, the island became associated with convict labour, gunpowder storage, the water police, harbour firefighting and shipbuilding.
One of the notable historic structures is the Queen’s Magazine, built in the 1830s using convict labour and sandstone quarried on the island.
- Learn about Sydney’s Aboriginal history
- Explore its convict-era history
- See historic structures
- Learn about the island’s changing role in Sydney
- Enjoy views of Sydney Harbour from the water
- There is an important catch for anyone planning a visit in 2026: Goat Island is currently closed for maintenance and remediation works. NSW National Parks says the closure runs from 23 April 2026 until 2 July 2027, with no public or tour access during that period.
- So, although Goat Island belongs on a Sydney Harbour island list because of its historical importance, check the latest NSW National Parks alert before planning a visit.
Fort Denison, also known by its Aboriginal name Muddawahnyuh, is one of the most recognisable small islands in Sydney Harbour. It sits in the water between the Sydney CBD and Taronga Zoo area, making it easy to spot while travelling around the harbour.
The island is best known for its historic fortifications and the Martello tower, which was built in the 19th century as part of Sydney’s harbour defences. Today, the island offers an interesting glimpse into Sydney’s military history.
Although it is small, Fort Denison has an excellent position for looking back toward Sydney’s skyline. It can be particularly interesting for visitors who enjoy history, architecture and harbour photography.
- Historic Martello tower
- Harbour defence structures
- Sydney Harbour views
- Interesting waterfront scenery
- Historic interpretation and heritage features
- Visitor tip: Access to Fort Denison can be restricted, so check current NSW National Parks information before planning a visit.
6. Fort Dening Island
Fort Dening Island is a tiny historic island near the eastern side of Sydney Harbour. It is associated with the harbour’s former defence system and forms part of the historic landscape around the harbour.
Unlike larger destinations such as Cockatoo Island, this is not an island where most visitors spend an entire day. Instead, its main appeal is its historical importance and its location within Sydney Harbour.
For travellers interested in Sydney’s military history, it can be an interesting addition to a harbour sightseeing trip.
- Learn about Sydney Harbour’s defence history
- See the island from the water
- Combine it with other harbour attractions
- Enjoy views across the surrounding harbour
- Photograph the historic waterfront landscape
- Because access arrangements can change, check the latest official information before attempting to land on or visit the island.
7. Snapper Island
Snapper Island is a small island located in Sydney Harbour near Balmain and Birchgrove. It has a long connection with Sydney’s maritime and military history.
The island was used for defence purposes and later became associated with naval activities. Its location also gives it an interesting perspective on the harbour’s busy waterways.
Snapper Island is not generally the type of destination where you arrive and spend hours exploring independently. It is better appreciated as part of a harbour sightseeing experience or from the surrounding water.
- Maritime history
- Historic harbour structures
- Views across Sydney Harbour
- Interesting location near Balmain
- A different perspective on Sydney’s waterfront
- If you are taking a harbour cruise, keep an eye out for Snapper Island as you travel through this section of the harbour.
8. Spectacle Island
Spectacle Island is another historic Sydney Harbour island with strong links to Australia’s military and maritime past.
The island was used for naval purposes and became an important storage location. Historic buildings and structures remain part of its character, giving it a very different atmosphere from Sydney’s popular picnic islands.
Because of its historical use, access is more restricted than at destinations such as Cockatoo Island. Visitors should not assume that they can simply arrive by ferry and explore independently.
- Important military and maritime history
- Historic buildings and storage facilities
- Located within Sydney Harbour
- Interesting to see during harbour cruises
- Public access may be restricted
- For anyone interested in Sydney’s lesser-known history, Spectacle Island is worth learning about even if you cannot visit it directly.
Frequently Asked Questions
How many islands are there in Sydney Harbour?
Sydney Harbour has several islands, including Cockatoo Island, Shark Island, Clark Island and Fort Denison.
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Which Sydney Harbour island is best for history?
Cockatoo Island is well known for its convict, industrial and naval history.
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Which island is good for a picnic?
Shark Island and Clark Island are popular choices for a relaxed harbour picnic, subject to current access conditions.
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Can I visit Fort Denison?
Access can be restricted, so check the latest NSW National Parks information before planning your visit.
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Can I visit Goat Island?
Goat Island (Me-mel) is currently closed for conservation and maintenance works, so check official alerts before travelling.
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Are Sydney Harbour islands accessible by ferry?
Some islands, particularly Cockatoo Island, can be reached by public ferry. Other islands require private boats, water taxis, tours, or have restricted access.
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Are Sydney Harbour islands suitable for photography?
Yes. Many offer views of the harbour, Sydney Harbour Bridge, Opera House and surrounding waterfront areas.
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What should I bring when visiting a Sydney Harbour island?
Bring drinking water, sun protection, comfortable footwear and any food you may need, especially when visiting an island with limited facilities.
I am Sabiq Hasan Rasel. Coffee with Travel, Recipes & Reviews is a cozy and engaging content space that blends a love of coffee with exciting travel experiences, delicious recipes, and honest reviews. It offers inspiration for coffee lovers who enjoy exploring new places, trying unique flavors, and discovering lifestyle tips along the way.
