The Spanish "YouTuber", Javier Caerta, used to publish videos of the progress of rebuilding and renovating the new "Santiago Bernabeu" stadium, Real Madrid's stronghold.

It was interesting to publish - two days ago - a new video clip on how the retractable green rectangle works, which is one of the most prominent aspects of the development of the new stadium.

This technology allows the playing field to change from grass to steel, and this allows the stadium to host football, basketball, tennis and other sports.

According to a "three-dimensional" video created by Kyarta, the auxiliary stadiums will be stored underground.