Open'er Festival is an annual music and arts festival held in Gdynia, Poland. It features a wide variety of genres, including rock, pop, hip-hop, electronic, and alternative music. The festival also features art installations, theater performances, and other activities. Open
From Wikipedia
The Open'er Festival is a music festival which takes place on the north coast of Poland, in Gdynia. It is one of the biggest annual music festivals in Poland. The first edition of the festival was organized in Warsaw in 2002 as Open Air Festival. Open’er Festival won the Best Major Festival prize at the European Festivals Awards ceremony in 2009, 2010, 2019, and 2024.