"Impossible Builds" is an access all areas look at the creation of some of the world's most ambitious, complex and technologically advanced construction projects. From subaquatic homes and the ultimate in billionaire luxury to futuristic towers and pencil thin skyscrapers, these are the structures they said could never be built. But now, using revolutionary technology and cutting-edge construction materials, three previously impossible builds are taking shape across the world. And "Impossible Builds" is on site to follow their progress every step of the way.

In Miami, follow the construction of one of the most complex skyscrapers ever to make it off the drawing board. Its design is so radical that construction experts have turned to a building material never before used in skyscrapers.

Can six sand islands, poking out of the Persian Gulf near Dubai, be transformed into the most luxurious holiday destination on earth? One man believes they can and he's risking tens of millions of dollars to prove it.

While some architects are looking up - others are looking down. Follow the build to make living beneath the waves into a reality as a team in Dubai attempts to construct a floating house combining the best of land and marine design. Will they achieve the impossible?

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