![File:Porta Principalis Sinistra, view from the outside of the fort, Saalburg Roman Fort, Limes Germanicus, Germania (Germany) (7957747470).jpg - Wikimedia Commons File:Porta Principalis Sinistra, view from the outside of the fort, Saalburg Roman Fort, Limes Germanicus, Germania (Germany) (7957747470).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/c/c9/Porta_Principalis_Sinistra%2C_view_from_the_outside_of_the_fort%2C_Saalburg_Roman_Fort%2C_Limes_Germanicus%2C_Germania_%28Germany%29_%287957747470%29.jpg)
File:Porta Principalis Sinistra, view from the outside of the fort, Saalburg Roman Fort, Limes Germanicus, Germania (Germany) (7957747470).jpg - Wikimedia Commons
![Porta Principalis Dextra, North Western Gate, Roman Fortress, York, Yorkshire, England, UK Stock Photo - Alamy Porta Principalis Dextra, North Western Gate, Roman Fortress, York, Yorkshire, England, UK Stock Photo - Alamy](https://c8.alamy.com/comp/2AJ3W06/porta-principalis-dextra-north-western-gate-roman-fortress-york-yorkshire-england-uk-2AJ3W06.jpg)
Porta Principalis Dextra, North Western Gate, Roman Fortress, York, Yorkshire, England, UK Stock Photo - Alamy
![Restitución virtual de la porta principalis sinistra a partir de los... | Download Scientific Diagram Restitución virtual de la porta principalis sinistra a partir de los... | Download Scientific Diagram](https://www.researchgate.net/profile/Angel-Cerdan-2/publication/345122790/figure/fig4/AS:952842969960449@1604186875719/Figura-7-Restitucion-virtual-de-la-porta-principalis-sinistra-a-partir-de-los-restos_Q640.jpg)
Restitución virtual de la porta principalis sinistra a partir de los... | Download Scientific Diagram
![Restitución virtual de la porta principalis sinistra a partir de los... | Download Scientific Diagram Restitución virtual de la porta principalis sinistra a partir de los... | Download Scientific Diagram](https://www.researchgate.net/publication/277261465/figure/fig6/AS:294224386904085@1447159968862/Restitucion-virtual-de-la-porta-principalis-sinistra-a-partir-de-los-restos-exhumados.png)