Exposition Universelle (Teaser)

Who really built these? I'm not sure but the people claiming they did are telling porkies.

Tune in to the next episode of the Hollow Perth Perspective where we
do a deep dive into all the oddities and anomalies in the recorded history of the World's fairs or the Exposition Universelle as the franks call it.
Not to mention some other massive structures reflecting the castles of medieval Europe and Romanesque columns and domes. Town Halls and markets that look like Cathedrals with Cathedral organs? All very outta place for a penal colony in the 1800's. Built from the wilderness with convict labour. no rail, heavy machinery or power tools... da fuq?