It’s no surprise that the definition of “eureka” is “a cry of joy or satisfaction when one finds or discovers something,” as the city of Eureka, California, is sure to bring a lot of joy to anyone who visits.With so many unique things to do in Eureka, California, the city is often a stopping point for travelers exploring the Pacific Northwest. It’s the largest city in Northern California between San Francisco and Portland, Oregon, and nestled between the redwood forest and Humboldt bay.