The Society of Oswin is a civilisation in a seperate dimension to the main universe, which has developed over billions of years.
When the Aberrations integrated into society, about a third of them wanted to continue with the technologically superior society they were used to. They used the time-displacement technology to create a dimension slightly outside of the main universe. They took the Stark-funded skyscraper with them in order to have a start for their foundation. It was named Oswin, after the person whose idea it was to create the dimension. The society continued from where the Aberrations civilisation had left off, and quickly developed technology that had been previously unimaginable.