Klub K4 is one of Ljubljana’s most storied clubs, a legendary basement venue on Kersnikova Street that has been central to the city’s electronic music scene for decades. With a stripped-back, underground feel, it hosts club nights spanning techno, house and other genres, along with occasional live acts, drawing students and dedicated clubbers. A cornerstone of the alternative nightlife alongside Metelkova, it remains the go-to spot for a serious night on the dancefloor in the capital.