Which Greek peninsula includes Mycenae, Troezen, Hermione, and Epidaurus?

The Greek peninsula that includes Mycenae, Troezen, Hermione, and Epidaurus is the Argolid Peninsula.

The peninsula occupies the eastern part of the Peloponnese, in the modern Greek region of Argolis. It brings together landmarks from several periods of Greek history: Mycenae was a major center of the Late Bronze Age, while Troezen, Hermione, and Epidaurus were important ancient city-states and coastal settlements.

Mycenae is especially famous for its fortified citadel, Lion Gate, and association with the legendary king Agamemnon. Epidaurus became renowned for the sanctuary of Asclepius and its exceptionally preserved ancient theater. Troezen was linked in Greek myth with Theseus, while Hermione was an important harbor community in the southern Argolid.

A common mix-up is confusing the Argolid Peninsula with the much larger Peloponnese, of which it forms only one part. Nafplio, on the peninsula, later served as the capital of the newly independent Greek state from 1821 to 1834.