Hills of Rock in Plovdiv
A three-day summer rock and metal festival staged on the grounds of Plovdiv's Rowing Canal, launched in 2017 and grown into Bulgaria's largest event dedicated to the genre. International touring acts headline alongside camping packages built into ticket sales, with the festival positioned as a companion to Plovdiv's Roman and Ottoman-era old town rather than a stand-alone destination.
Plovdiv's Rowing Canal, built for competitive rowing, doubles every July as the stage for Bulgaria's largest rock and metal festival.