From the Super Mario Wiki
The city of Mythis seems to be largely Greek inspired, with large, circular pillars decorating the fields of Mythis. Additionally, various fountains, pedestals and statues are also abundant in Mythis.
The extremely powerful Great Balls of Fire are also located in Mythis, atop an acropolis, where they are guarded by the legendary hero Hercufleas. The main mode of transportation in Mythis appears to be chariots, which are pulled by Ostros.