If you're a cherry fan, you have Giresun to thank for them. It was from here that the Roman general Lucullus tasted his first cherry (the town's name stems from the Greek word for cherry) and took the fruit back to Rome.
Giresun occupies the site of ancient Kerasous, founded by Miletus in the 7th century BC. Despite this rather long history, there's not much to see.
The ruins of a Byzantine castle above town have great views across the surrounding countryside, and Giresun Museum on Atatürk Caddesi has an excellent collection of archaeological finds if you're passing through