Which structure features an Ionic interior with a Doric exterior on the first floor?

The Stoa of Attalus II is renowned for its distinct architectural characteristics that exemplify the combination of Ionic and Doric elements. The structure showcases a Doric exterior on the first floor, which is a hallmark of Greek architecture known for its sturdy and unadorned columns. This robust exterior often served as a visual statement of strength and permanence, typical of public buildings during the Hellenistic period.

Inside, the Stoa features an Ionic style, which is noted for its elegance and decorative columns with scroll-like volutes. This interior design choice reflects the sophistication of Ionic architecture and serves as a contrast to the more austere Doric style, enhancing the sensory experience of the space. The use of these two architectural orders serves not just an aesthetic purpose but also demonstrates the architectural innovation and cultural synthesis of the time period.

In contrast, the other structures listed do not embody this specific combination of Ionic and Doric features. For instance, the Temple of Apollo Epikourios is predominantly characterized by its Doric order throughout, while the Theater of Epidauros primarily employs a more uniform application of classical orders without the same duality. The Lysikrates Monument, known for its Corinthian style, significantly diverges from the Ionic-Doric combination