Greek theater originated from religious festivals honoring Dionysus. Performances included tragic dramas by Aeschylus, Sophocles, and Euripides, as well as comedies by Aristophanes. Theater was an integral part of Greek culture and performed in amphitheaters with the audience seated on rising tiers around the orchestra. Aristotle's Poetics analyzed Greek dramatic structure, while Roman theater borrowed from Greek traditions and incorporated performances into their own religious festivals.