Argostoli is a town and a former municipality on the island of Kefalonia, Ionian Islands, Greece. Argostoli developed into one of the busiest ports in Greece, leading to prosperity and growth.
The city also has a rich library, called Korgialenio. Korgialenio is believed to be the third largest library nationwide and has many, rare texts and manuscripts dated back to 1535.
One of the "mysteries" of Argostoli is Katavothres, a rare geological phenomenon. At the edge of the Argostoli peninsula the sea penetrates the land and flows into sinks. The phenomenon has been long overwhelmed by scientists.