F.Carmen M.
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''The station is an open-vault metro station, the largest without any support pillars on the network. To facilitate construction, impressive efforts had to be done: the soil was frozen for 90 days, and the technology used to make it was also one of the few technologies imported from other countries to construct the metro.
The works lasted 4 years, in December 1981 the station was inaugurated.
It should also be added that, since its commissioning, the station has never been renovated or consolidated.''
Curved lines
''The station is an open-vault metro station, the largest without any support pillars on the network. To facilitate construction, impressive efforts had to be done: the soil was frozen for 90 days, and the technology used to make it was also one of the few technologies imported from other countries to construct the metro.
The works lasted 4 years, in December 1981 the station was inaugurated.
It should also be added that, since its commissioning, the station has never been renovated or consolidated.''