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Jenolan Caves - The Jenolan Caves in Oberon, NSW are in a UNESCO World Heritage Area and have been nominated as one of the seven greatest wonders of Australia. 

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Lord Howe Island - The isolated Lord Howe Island in Tasman Sea, NSW is a UNESCO World Heritage Site.

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The Snowy Mountains Scheme - This NSW dam employs 100,000 people and cost $820 million to build. 

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Blue Mountains/Three Sisters - The Three Sisters in the Blue Mountains are 920m high and home to 177 threatened species. 

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Uluru - Uluru in the Red Centre, NT is 348m high and is a UNESCO World Heritage Site.

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Kakadu National Park - The Kakadu National Park in NT is 20,000km² and home to 280 species of bird.

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Kata Tjuta - Kata Tjuta's highest peaks get up to 500m and is made up of 36 domes.

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Katherine Gorge - The Katherine Gorge in Nitmiluk National Park, NT is defined by sandstone and rainforest.

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Karlu Karlu - These 6m high rock formations sometimes called the Devil's Marbles, are 100km from Tennant Creek, NT.

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Kings Canyon - The canyon in Watarrka National Park, NT is home to 600 plant species.

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The Great Barrier Reef - The endangered reef is about 7,000-years-old, home to 6,600 species of marine life and is 348,000km². 

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Fraser Island - Fraser Island is home to 230 species of bird and has 100 freshwater lakes. 

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National Museum of Australia - The National Museum of Australia in Canberra was opened in 2001.

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Whitehaven Beach - Whitehaven Beach in the Whitsunday's, QLD is 7km in length and considered one of the best beaches in Australia.

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Wallaman Falls - Wallaman Falls in Wet Tropics, QLD is 268m in height.

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Lady Elliot Island - Lady Elliot Island in the Southern Great Barrier Reef, QLD is home to 57 species of birds.

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The Daintree Rainforest - The Daintree Rainforest is believed to be 130 million-years-old.

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The Australian War Memorial - The Australian War Memorial in Canberra was built in 1941.

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The SS Yongala Wreck - The SS Yongala Wreck sank in 1911 and is 90km south-east of Townsville, QLD.

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QLD's Fossil Sites - The fossils uncovered across QLD are around 30 million-years-old.

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Wilpena Pound - Wilpena Pound is 17km long was formed 800 million-years-ago. 

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Naracoorte Caves - The Naracoorte Caves are home to rare fossils and are 6.60 km² in size.

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Sydney Opera House - The Sydney Opera House receives 8.2 million visitors per year and cost $102 million to build. 

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Flinders Chase National Park - Flinders Chase National Park on Kangaroo Island, SA is home to unique rock formations and caves.

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Umpherston Sinkhole - The Umpherston Sinkhole has a garden and is home to 36 possums. 

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Lake Eyre - Lake Eyre is 15 metres below sea level and the lowest point in the country.

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Lake Gairdner - Lake Gairdner is 5,532 km² and the fourth-biggest salt lake in the world.

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Cradle Mountain - Cradle Mountain is 1,545m in height and has 300 endemic plant species. 

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Port Arthur Historic Site - Port Arthur Historic Site was built in 1830 and is the biggest remnant of European colonisers and convicts.

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Tasman Island - Australia's most isolated lighthouse is on Tasman Island and was built 70-years-ago.

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The Nut - Stanley, TAS is 143m high and home to 553 people. 

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Wineglass Bay - Wineglass Bay in Freycinet National Park, TAS is 1,700 metres long.  

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Franklin-Gordon Wild Rivers National Park - Franklin-Gordon Wild Rivers National Park in TAS is one of Australia's largest conservation areas.

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The Bay of Fires - The Bay of Fires in TAS is one of the most beautiful coastlines in Australia.

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The Tarkine - The Tarkine is 4,470km² in size and home to 60 threatened or endangered species.

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Sydney Harbour Bridge - The Sydney Harbour Bridge is 1,149m long and was completed in 1932.

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Grampians National Park - Grampians National Park is 1,672 km² in size and home to 975 plant species. 

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Shrine of Remembrance - The Shrine of Remembrance in Melbourne was built in 1934.

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The 12 Apostles - The 12 Apostles along Great Ocean Road, VIC reach as high as 45 metres. 

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Parliament House - Parliament House in Canberra was opened in 1988.

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Royal Exhibition Building - The Royal Exhibition Building in Melbourne was built in 1880.

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Wilsons Promontory National Park - Wilsons Promontory National Park in Gippsland, VIC is home to 4,200 threatened species. 

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Phillip Island penguin parade - Thousands of the little penguin species go on a journey to bury themselves in the sand at night in Phillip Island, VIC.

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The Horizontal Falls - The Horizontal Falls in Talbot Bay, WA are 2,480 km² in size.

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Cape Le Grand National Park - Cape Le Grand National Park on the south coast in WA is 318km² in size.

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Purnululu National Park - Purnululu National Park in the Kimberley region of WA is 2,397km² in size.

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Lake Hillier - Lake Hillier on Middle Island, WA is 600 metres in length. 

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Mitchell Falls - Mitchell Falls in the Kimberley region of WA is 80 metres high. 

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Ningaloo Reef Marine Park - Ningaloo Reef Marine Park is 300 km long.

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The Pinnacles - The Pinnacles in Nambung National Park, WA is 192.68 km² in size.

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Wave Rock - Wave Rock in Hyden, WA is 110 metres in length.

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Wolfe Creek Crater - The Wolfe Creek Crater in the Kimberley region of WA has a 880 metre radius.

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Fremantle Prison - Fremantle Prison is the only UNESCO World Heritage Listed building in Australia.

Which wonder will you vote for?

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