Roman art
The most important point about this city, is the combination of Persian and Roman art and architecture that hadn't been seen before Bishapur construction. Before Bishapour was built, almost all the main cities in Persia/Iran had a circular shape like the old city in Firuzabad or Darab. Bishapour is the first Persian city with vertical and horizontal streets. Also in the city, especially in interior design, we can see tile work that's adapted from Roman Art