GUCA, SERBIA, Aug. 13 (Xinhua) --The 50th annual Guca Trumpet Festival, a festival of unique folk art and brass music, opened Friday in Guca, western Serbian town. Serbian Minister of Infrastructure Milutin Mrkonjic opened the festival at the local Trumpet Player Monument on Friday. The festival is the biggest trumpet festival in the world, attracting hundreds of thousands of tourists annually these years to Guca, a small town with only approximately 2,000 residents. 'Guca is today the center of the world, and the festival is one of Serbia's greatest and leading brands. That is why the government supports this unique manifestation, which has been enduring and developing for half a century now,' Mrkonjic said on the opening ceremony. At the entrance to Guca, a monument was unveiled to Desimir Perisic, a local farmer and the winner of the first festival held in October 14, 1961. During the festival of this year, more than 40 local and foreign bands will attend the competition part, and at least 700, 000 tourists will come to Guca, the organizer told Xinhua. The festival ends on August 22. 