That is urbanization.
Because of urbanization, residence expands to the side of treasures of history. Drains from house influence under water around Sphinx.
And preserving nice view is also a agenda to solve.
Photos of Pyramids.
To summarize what I have written above, Pyramids are historic sites that represents the power of monarch and that leaves some arguments that still open to question.
In conclusion, to protect these mysterious heritage sites, we need to protect agenda for example urbanization.