[HIGHLIGHTS] In the guts of the 'Zidane Tower', the building of records: the tallest in Spain (with controversy), elevators at 40 km/h, 6 glass soccer fields, 4,500 workers...

In the guts of the 'Zidane Tower', the building of records: the tallest in Spain (with controversy) 26 elevators at 40 km/h, 6 glass soccer fields, 4,500 workers. "The main challenge of maintenance is making it seem invisible," says Juan Diego Carrasco, director of Real Estate at Mutua Madrileña.

The daily working of all 52 floors must be serviced, divided into a ground floor for offices and access, 46 for technical installations and 6 underground for parking.