The Open'er Festival is an annual music festival held in Gdynia, Poland. It typically takes place in early July and features a diverse lineup of international and local artists across various genres, including rock, pop, and electronic music. The festival attracts thousands of attendees each year, making it one of the largest music events in Poland. In addition to music performances, the Open'er Festival offers art installations, workshops, and food stalls, creating a vibrant atmosphere for festival-goers. The event is known for its scenic location near the Gdynia Airport, providing a unique backdrop for performances and activities.