Era beginning/end
This marks when the high elves from Faerun defeated the two dragons and laid the foundation for the capital city of Olarius. Greyhawk has been a nation for nearly 24,000 years.
After defeating the two dragons, the newly instated High Council of Greyhawk honored one of the two dragons whose blood had to be spilled. What would later be known as the capital city of Greyhawk, Olarius began as little more than a coastal town on the continent's most northern shore.