With Urban.com.au's Project Database now being expanded to encompass all of Australia, and more national content appearing on the site, it seemed like a good opportunity to highlight the country's future top 10 tallest skyscrapers on the horizon, not including those already completed.

#1. Green Spine (Residential Tower) I Melbourne I 356.2M

Green Spine by UNStudio and Cox Architecture is planned to be the tallest skyscraper in the Southern Hemisphere. The tower was the winner of Beulah International’s international competition for a $2 billion development in Melbourne’s Southbank.

The Green Spine design comprises of two twisting towers. Image: Cox Architecture.

#2. Magic Tower I Melbourne I 60- storeys I 330M

The Magic Tower is a slender skyscraper designed by Decibel Architecture in partnership with Royal Society of Victoria. The residential tower will be located in the north eastern corner of Hoddle Grid.

If to be built Magic Tower will be the tallest tower for it's width in Melbourne. Image: Decibel Architecture

#3. Orion Towers (South Tower) | Gold Coast | 103-storeys | 328m

Orion Towers' South Tower would become the tallest in Australia. Image: Woods Bagot

The $1.2b twin-tower development in Surfers Paradise known as Orion Towers will soar 103 storeys high for a total height of 328m, inching out Melbourne's One Queensbridge by 5m. The development will also feature Australia’s highest observation restaurant on level 101 offering 360-degree views.

The tower is anticipated to be completed by 2027.

#4. One Queensbridge | Melbourne | 90-storeys | 323m

One Queensbridge should it proceed, would eclipse Australia 108. Image: Schiavello

One Queensbridge should it proceed, would eclipse Australia 108. It will be a JV between Crown Resorts and Schiavello. The Age reported in May of last year that as part of the approval, a deadline for February 2019 had been set to commence construction of the project.

The Wilkinson Eyre designed goliath is yet to commence, as it is currently undergoing construction delays due to being unable to obtain government approval for alterations.

#5. Australia 108 | Melbourne | 100-storeys | 317m

Australia 108 races along to its title of Melbourne's tallest. Images (L-R): FK | Mark Baljak

Australia 108 is to rise opposite it’s sister tower, Eureka.

This time last year, Australia 108's core reached level 60 with the floorplates well over the halfway mark. This also coincided with the first residents beginning to move in on levels 14 and 30 as part of the completion of stage 1.

The tower is still presently undergoing construction, with more residents being able to move in from 2020.

#6. Spirit | Gold Coast | 89-storeys | 298m

Spirit on the Gold Coast will launch to the market next month. Image: Forise Holdings

Designed by DBI Design who have previously designed other notable towers on the Gold Coast such as Oracle, Jewel, SOUL Tower and The Wave, Spirit was to have been the tallest building to roof in Surfers Paradise prior to Orion Towers' entry onto the list.

The design features a dramatic wave across its facade similar to The Wave, but on a grander scale. The current proposal replaces an earlier scheme for Iluka Tower, following Forise Holdings purchase of the site in 2015.

This tower is in the early stages of construction.

#7. Cienna Square Tower II | Gold Coast | 88-storeys | 280m

Cienna Square will be developed on the site of the former Regent Cinema. Image: DBI Design

Cienna Square will be developed on the site of the former Regent Cinema. DBI Design's second entry on the list is for a dual tower on the Southport site of the former Regent Cinema, which has remained empty since it was cleared to pave way for a now unbuilt scheme back in 1989.

Cienna Square received preliminary approval back in April 2016.

#8. Crown Sydney Hotel & Resort | Sydney | 75-storeys | 271m

Crown Sydney Hotel and Resort will be built within Barangaroo. Image: Wilkinson Eyre

Crown Sydney Hotel and Resort will be built within Barangaroo.

Crown Resorts' second tower on the list sees it once again collaborating with architects Wilkinson Eyre on what is set to become Sydney's tallest building, capping off the Barangaroo development.

The tower is expected to be completed in the first half of 2021.

#9. Brisbane Skytower | Brisbane | 90-storeys | 270m

Brisbane's under construction Skytower. Images (L-R): Billbergia | Ozscrapers member fyturis

Brisbane's recently completed Skytower. Billbergia and AMP Capital's joint venture project, Skytower is Brisbane's tallest tower and bookend the southern edge of the CBD, it is located directly opposite the Botanic Gardens.

New levels have just been completed on this tower and are now selling.

#10. 240 Margaret Street | Brisbane | 87-storeys | 270m

240 Margaret with the neighouring U/C Skytower. Image: World Class Land

240 Margaret with the neighbouring U/C Skytower. World Class Land's second entry on the list following its Australia 108 project will reach the same height as the neighbouring Skytower development. This is the maximum height allowed in Brisbane as a result of Brisbane Airport radar shadowing issues.

The tower has been granted development approval.