Most touring international acts perform in Sofia's many venues, but there are increasingly esoteric options around Bulgaria: Veliko Târnovo's medieval fortress is lit in a rainbow of colours for the regular Sound & Light Show, while Plovdiv's Roman amphitheatre hosts concerts from opera to metal. Bulgaria also enjoys a flourishing theatre scene in major cities. For up-to-date entertainment listings in Sofia, Plovdiv, Burgas, Varna and Stara Zagora, browse www.programata.bg.