» "Nauplia" redirects here; it can also mean the plural of "nauplius". Nafplion (Nafplio) or Nauplion (Naupliōn)'s a seaport town in the Peloponnese in Greece that's expanded up the hillsides near the north end of the Argolic Gulf. The town was the first capital of modern Greece, from 1829 to 1834. Nafplion, with a population of (13,822)'s the capital of the prefecture of Argolis and the province of Nafplion. Name The name of the town in Greek's Ναύπλιο o… (More on Nafplion)