The first in Eastern Europe AI research center was Opened in Sofia, Bulgaria. It is going to be a top destination for the capital of Bulgaria for computer science. Bulgarian government is going to invest $100 million into the INSAIT. As an additional investment, such huge companies as Google, DeepMind, Amazon and SiteGround are going to also invest $10,5 million.
Source: https://sciencebusiness.net/news/bulgaria-launches-ai-research-centre-woo-science-and-tech-talent
