What type of columns are NOT featured in the Colosseum's design?

The Colosseum, an architectural marvel of ancient Rome, uniquely features a combination of different column styles across its three tiers: the ground level showcases Tuscan columns, the second level includes Ionic columns, and the third level is designed with Corinthian columns. However, the design does not include caryatids, which are sculpted female figures serving as architectural supports, often seen in other ancient structures like the Erechtheion in Athens.

Caryatids represent a distinct architectural choice that emphasizes sculptural human forms, which contrasts sharply with the classical column types utilized in the Colosseum. This absence of caryatids in the Colosseum’s design highlights the Romans’ preference for more traditional Greek column styles rather than taking a sculptural approach to structural support commonly associated with Greek architecture. The presence of Composite, Tuscan Doric, and Corinthian pilasters aligns with the architectural conventions of the time, enhancing the grandeur and functionality of the Colosseum while firmly asserting its identity as a Roman structure.