Akungabazeki ukuthi itshe lesikhumbuzo elikhulu kunawo wonke eJaca, iCitadel yalo edumile, laziwa kwaze kwaba ngekhulu le-XNUMX njenge- “Castillo de San Pedro”, iqoqo lezempi elaqala ukwakhiwa kwalo ngasekupheleni kwekhulu le-XNUMX, futhi laqedwa ngekhulu le-XNUMX. ICitadel yaseJaca Ekuqaleni yakhuliswa njengengxenye yokuvikela ukuvelela, okwakuhlose ukuvikela imingcele yamaFrance futhi ngaleyo ndlela kumise izimpi zenkolo phakathi kwamaProthestani namaKatolika ezaqanjwa kulawo makhulu eminyaka eYurophu.
Ukwakhiwa kwe- Inqaba yaseSan Pedro Yaphathiswa nguFelipe II unjiniyela wase-Italy uTiburcio Spanochi, owaphakamisa umhlaba ongaphandle ukuze ube lapho, ezindaweni ezisenyakatho yedolobha laseJaca. Le nqaba yethulwe njengokwakhiwa okukhulu okunezivikelo ezinohlelo lwe-pentagonal, enesisekelo esimise okomcibisholo engxenyeni ngayinye, konke kuxhunywe komunye nomunye ngendlela yokuhamba embozwe.
Ngaphakathi, engxenyeni emaphakathi, iCitadel inendawo enkulu yokubukisa, enqunywe yi-arcade enamazinga amabili eshintsha imengamo yezitini eyindilinga. Ingaphakathi lakhona futhi linesonto elincane elizinikele eSan Pedro, elisukela ngekhulu leshumi nesikhombisa, elinombhalo ongaphansi kweBaroque ohambisana namakholomu kaSolomonic shaft. Ngaphandle, uhlelo lokuzivikela luqediwe nge-glacis kanye nomsele ezindaweni eziphakeme ezimbili, ongakaze ube namanzi kepha okwamanje osebenza njengendawo yokuhlala yezinyamazane ezithile. Ingubo yezingalo zeHabsburgs umqhele wokungena kule nqaba. Inqaba yamenyezelwa itshe lesikhumbuzo ngoJuni 28, 1951, Ibuyiselwe kusukela ngo-1968.