Daejeo Ecological Park

This guide to Daejeo Ecological Park in Busan follows one April morning when a sea of canola flowers becomes an open-air wedding hall, as couples marry shoulder to shoulder at the opening of the Nakdong River Yuchae Festival. It traces the park's own path from farmland growing barley and bamboo to Korea's largest canola planting, and reaches downstream to the whooper swans that winter at the Nakdong estuary, birds said to pair for life. Rent a bike at the gate and ride out to where the yellow is thickest.