Willows is a small agricultural town in California's Sacramento Valley, about halfway between Sacramento and Redding on Interstate 5. With a population around 6,000, it functions mostly as a rest stop and service point for travelers driving the length of the Central Valley. The surrounding land is some of California's most productive rice country, and you'll see flooded paddies stretching to the horizon in winter and spring.
The real reason to stop here is the Sacramento National Wildlife Refuge, just a few miles south of town. The refuge protects wetlands along the Sacramento River flyway, and from October through February it hosts enormous flocks of migrating snow geese, pintails, and tundra swans — one of the best wintering waterfowl spectacles in the western United States. A six-mile auto tour loop makes it accessible even on a quick detour from the highway.