My understanding of the word "infrastructure" is that it is uncountable.
However, upon looking it up in Oxford Learner's Dictionary, I found that it is classified as "countable, uncountable." http://www.oxfordlearnersdictionaries.com/definition/english/infrastructure
With that in mind, my question is: is the following sentence grammatical? It seems wrong to me:
I enjoy the city infrastructures and the kindness of the local people.
EDIT: This was written by a student from a developing country about her experience living in a developed one.