The two crossword solutions for the term 'Peloponnesian City' are Argos (5 letters) and SPARTA (6 letters). Argos is an ancient city located in the northeastern Peloponnese, in Greece. It was one of the oldest cities in the world, with a recorded history that dates back to the Bronze Age. SPARTA, also located in the Peloponnese, was a prominent city-state in ancient Greece. It was known for its military prowess and strict social structure. Both cities were important centers of culture and commerce in the ancient world.