Untold is the largest electronic music festival in Europe. This event was created in 2015, being the major event of the Cluj Napoca Program 2015 - European Capital of Youth, and will take place every year in August for four days in the city of Cluj Napoca. So far, the two editions, gathered internationally renowned artists, such as: Armin van Buuren, Avicii, David Guetta, ATB, Dimitri Vegas & Like Mike, Tom Odell, Hardwell, Afrojack, Martin Garrix, Armin van Buuren, Faithless, Scooter, Nervo, Parov Stelar, Lost Frequencies, James Arthur. Concerts of these artists are held outdoors, at Cluj Arena. The 2015 edition was attended by 240,000 people with a financial impact of approximately 23 million euros and the number of tourists visiting Cluj Napoca increased by 27% in August. In 2016, the number of tourists increased to 300,000 thousands, which resulted in a greater financial impact of 32 million euros.

Untold is the best product of Romania entertainment. This event was promoted for those two editions by two original campaigns "Pay with Blood" (2015) - blood donors received free tickets to the festival and "Transylvania All Inclusive" (2016) – the access bracelet to the festival offered you free sights visits in Transylvania.

Untold was the Best Major Festival at the European Festival Awards 2015 which took place in Groningen, the Netherlands.The National Tourism Authority, representatives of central public administration in tourism, is the Untold partner since 2016.