Fiume, known as Rijeka in Croatian, is a port city located on the northern Adriatic Sea in Croatia. It is the third-largest city in the country and serves as an important economic and cultural center. Fiume has a rich history influenced by various cultures, including Italian, Hungarian, and Austrian. The city is known for its vibrant waterfront, historic architecture, and diverse population. Key landmarks include the Trsat Castle, the Korzo promenade, and the Rijeka Cathedral. Fiume was also the European Capital of Culture in 2020, highlighting its significance in the region.