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 multimillion dollar floating house combining the best of land and marine design. Will they achieve the impossible?

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.

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 it features its skeleton on the outside and construction experts have turned to a building material never before used in skyscrapers.