Argolis or Argolida is one of the regional units of Greece. It is part of the region of Peloponnese, situated in the eastern part of the Peloponne…Argolis or Argolida is one of the regional units of Greece. It is part of the region of Peloponnese, situated in the eastern part of the Peloponnese peninsula and part of the tripoint area of Argolis, Arcadia and Corinthia. Much of the territory of this region is situated in the Argolid Peninsula.