The first thing we see is that nothing identifies the work that is being done in that central part of the city, there is no descriptive fence that clarifies what is being built.

The absence of proper signage and billboards is a typical scenario in most urbanized developments and cities around the world. It's obvious evidence that the ongoing project might be abandoned due to several reasons - architectural/engineering mishaps, financial issues, non-compliance with building codes, etc. The list of problems might even be longer. Thanks a lot, @manuelmilano for your actual survey of this project and for presenting it in this community!