Finncon is the largest science fiction convention in Finland and, with up to 15,000 participants, one of the largest SF conventions in Europe. Finncon is unique among SF conventions because it has no participation/membership fee, and is funded primarily on various cultural grants as well as income from traders. The event is organised annually in different cities in Finland. Finncon alternates between different cities in Finland without a formal rota. Recently the event has been held almost every year, but occasionally a year is skipped if no city is found to host the event that year.