The next tallest building in the world could be in Tokyo — here's what it would look like if built

A new building that would be the tallest in the world could be set to rise in Tokyo. 

A recent proposal highlights plans for a building called the "Sky Mile Tower", which would rise a mile above Tokyo Bay. 

At almost double the size of the world's current tallest building, Dubai's Burj Khalifa, the skyscraper would be the world's new tallest if built.

The skyscraper is part of a larger proposal by Kohn Pedersen Fox Associates (KPF) and Leslie E. Robertson Associates called "Next Tokyo 2045", which outlines ways in which an eco-friendly district could be built to combat rising sea levels in Tokyo Bay.

No funding has been announced, but if it is built, the structure will house sky decks that rise as high as 420 stories. 

Scroll down to see what the project would look like if it comes to fruition.

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If built, the Sky Mile Tower would stretch 420 stories into the sky. It would be used primarily for residential purposes, housing around 55,000 people, with a supporting retail program throughout several "sky lobbies" within the building.

The proposal is part of a wider goal to build a mega-city with a resilient infrastructure to battle the rising sea levels and typhoon risks surrounding Tokyo Bay. The skyscraper would be surrounded by rings that are positioned to break up strong waves while also allowing ships to pass.

There will also be farm plots floating in the surrounding waters.