Highlights: The Opatija seaside promenade is 12 kilometers long, with the green Adriatic Sea on one side and verdant woods and villas on the other. Strolling through it, mixed with the artist's accordion sound and the sea breeze, makes people feel relaxed and happy. It is also a good place to watch the sunset. In the evening, many people come here for a walk, so it is a good place to relax.