This is a heavy thing, so heavy with Italian Carrara marble that this colossal building is sinking!!!
The architect had a great, grandiose idea, but it was too much for the terrain sustaining it, every year the building sinks a few millimeters, but the sum over the years is more than a meter.
The sinking problem is nothing from this century, it began during the initial phase of setting up the metal structure, but the architect thought that with some corrective procedures it would be enough, he was so wrong but still decided to continue with the edification.
In 1908 some engineers suggested some corrective measures but as the administrators considered it too expensive, opted for the cheap way. After the injection of about 1859 tons of cement and limestone between 1910 and 1912 the sinking process slowed a bit, but in the years after, more injections have been required, fortunately the compaction of the soil due to the great weight of the building has helped to slow the sinking in recent years.