Imagine we wanted to make an exact copy of the pyramids in Egypt, the great pyramid specifically.
Never mind building them without machines. Do you think mankind, not just the current residents of Egypt, but do you think in this world there exists the technical know how and political will to even be able to do it?
possibly but much of what's required is not fully known
the alignments are probably not fully appreciated
then there are the artifacts - bowls made from schist stone so thin they are translucent which are turned but include handles in the way of turning and are very precsicely aligned.
https://www.youtube.com/watch?v=QzFMDS6dkWU