The convent covers a whole block. It can be visited and it's the most important touristic reference in Arequipa.
The convent is huge, and it includes dozens of rooms and former nuns cells. There are kitchens, patios, the meals hall, several cloisters restrooms, patios and so much more! Visits can be guided, but that's an extra over the 10 EUR of the regular ticket, which comes with a map.
It's a very picturesque place and the visitor should be ready to spend a whole morning or afternoon exploring the convent.
Sadly some of the parts originally open to the public are now closed, like the old cemetery.
Check the official website for exhaustive information.
From Wikipedia:
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visit link)
"The foundress of the monastery was a rich widow, Maria de Guzman. The tradition of the time indicated that the second son or daughter of a family would enter a life of service in the Church, and the monastery accepted only women from upper class Spanish families. Each family paid a dowry at their daughter's admission to the monastery. The dowry expected of a woman who wished to enter as a choir nun—indicated by wearing a black veil—and who thereby accepted the duty of the daily recitation of the Divine Office, was 2,400 silver coins, equivalent to about $150,000 (U.S.) today. The nuns were also required to bring 25 listed items, including a statue, a painting, a lamp and clothes. The wealthiest nuns may have brought fine English china and silk curtains and rugs. Although it was possible for poorer nuns to enter the convent without paying a dowry, it can be seen from the cells that most of the nuns were very wealthy.
In 1871, Sister Josefa Cadena, O.P., a strict Dominican nun, was sent by Pope Pius IX to reform the monastery. She sent the rich dowries back to Europe, and freed all the servants and slaves, giving them the choice of either remaining as nuns or leaving. In addition to the stories of outrageous wealth, there are tales of nuns becoming pregnant, and amazingly of the skeleton of a baby being discovered encased in a wall. This, in fact, did not happen in Santa Catalina, and there are rumors of the same story in the nearby Santa Rosa monastery, as well.
At its height, the monastery housed approximately 450 people (about a third of them nuns and the rest servants) in a cloistered community. In the 1960s, it was struck twice by earthquakes, severely damaging the structures, and forcing the nuns to build new accommodation next door. It was then restored in stages by groups including Promociones Turisticas del Sur S.A. and World Monuments Fund and opened to the public. This also helped pay for the installation of electricity and running water, as required by law."