Who built the first Roman auditorium?

The first Roman auditorium was built by Pompey the Great, specifically recognized for the construction of the Theatre of Pompey in 55 BCE. This structure was significant as it served not only as a venue for dramatic performances but also included a temple and gardens, thereby providing a multifaceted space for entertainment and public gatherings in Rome.

Pompey's efforts marked a pivotal moment in the development of Roman theatre architecture, as his auditorium was one of the first to be enclosed, which greatly influenced the design of future theatres. Prior to this, performances often took place in temporary or improvised spaces. This venue represented a transition toward more permanent structures dedicated to the arts, setting the precedent for subsequent Roman theatres.

The other figures mentioned, while influential in various ways, were not directly responsible for constructing the first Roman auditorium. Julius Caesar and Augustus contributed to later developments in Roman culture and architecture, while Marcus Aurelius, known for his philosophical contributions, came much later in Roman history and did not contribute to theatrical structures in the same way.