Beautiful! Guided tours leave every 15 minutes. Ti...

Beautiful! Guided tours leave every 15 minutes. Tickets are purchased online or right there from 9am. They have 2 slots with different prices, it is more expensive visit from 11 to 15hs. Resident Argentine students with something that proves (notebook or, in our case, debit card Galicia move isic and Santander UNSTA). We paid $ 100 each for 15.45hs.
The underground workshops are no longer covered, only the hall and the galleries.