The exterior of "The City of Miracles" was already enough to shock Yennefer. The scene within the walls blew her away.
No other city, no matter how grand, would be as tidy and orderly as Kaer Morhen was. Look at the commercialized public transportation in the town. It was so developed, so convenient.
When Olivia was creating this city, she had drawn most of her inspiration from modern cities. She had even made sufficient preparation for future expansions. This included the residential area, business district, industrial area. Such a precisely designed city left the other cities of its time in the dust.