These are mainly architectural ideas for Al' Runica, the kingdom's capital. Al' Runica is mainly formed by colonial-European buildings with a prehispanic structure, such as pyramid structures with European facades. This is influenced by how the Spanish destroyed or built on top of prehispanic monuments and buildings during the conquest of Mexico. This means that while the surface is different, at its core the people of Durashonia will always be connected to their roots no matter how hard Exicom tries to erase their identity or absorb them as part of their empire.
Most of Durashonia is heavily inspired by Mexico and sometimes specifically Southeast Mexico (where I live haha) since it is more connected to Mayan culture, which Arcadia uses as an influence.