Dia is a small island off the northern coast of the Greek island of Crete. Today, it is a restricted haven for the Kri-kri, a small and endangered breed of deer.
The island is visible from the island's capital city of Heraklion, as it would have been in the time of the Minoan kingdom, from the capital of Knossos. Because of this, it was sometimes identified as the island that Theseus escaped to after killing the Minotaur.
The Greece that Poe praised was primarily Athens during its golden age in the 5th century BC.
During the classical period of Greek history (roughly the 5th and 4th centuries BC), Greece was not a country in the modern sense but a collection of hundreds of small, independent city-states, each with its surrounding countryside.
Ancient Greece is the birthplace of the concept of democracy.