Golden Triangle (Finland) From Wikipedia, the free encyclopedia Region in southwestern Finland The golden triangle is an informal Finnish-English term for the area of southwestern Finland between the cities of Helsinki, Turku, and Tampere where most of the country's population, arable land, and GDP is done. Half of Finland's regions experience natural net population loss, Helsingin Sanomat This Finland location article is a stub. You can help Wikipedia by expanding it.vte Related Articles