Intangible Cultural Heritage by UNESCO - Bulgaria has 4 entries on the list http://buff.ly/1OCv1ER in BG, from National Geographic: http://buff.ly/1OCv7MH
UNESCO established its lists of Intangible Cultural Heritage with the aim of ensuring the better protection of important intangible cultural heritages worldwide and the awareness of their significance. Through a compendium of the different oral and intangible treasures of humankind worldwide, the program aims to draw attention to the importance of safeguarding intangible heritage, which UNESCO has identified as an essential component and as a repository of cultural diversity and of creative expression.
The list was established in 2008 when the 2003 Convention for the Safeguarding of the Intangible Cultural Heritage took effect.
Read more here: https://en.wikipedia.org/wiki/UNESCO_Intangible_Cultural_Heritage_Lists