Join一 科学与技术 upcoming events being held in Debreceni Járás. Debreceni Járás is a district located in the eastern part of Hungary, in the Hajdú-Bihar county, featuring the cultural hub and second largest city of the country, Debrecen, known for its vibrant festivals, historic sites such as the Great Church and the Reformed College, spas, and its central location, making it a great gateway to explore the famous Hortobágy National Park, the Great Plain, and other picturesque towns of the region.