Corona sits in the Inland Empire of Southern California, known as the Circle City for Grand Boulevard, a rare circular street that rings downtown. The city grew from citrus groves, and for years it was known as a lemon growing center, with packing houses and orchards shaping work and daily life. The Santa Ana Mountains rise nearby, and the Cleveland National Forest offers trails and open country just outside town. Corona has grown into a large suburban city, but the circle at its center still gives it a shape unlike any neighbor, a reminder that a city can keep its own geometry.