Bulgaria is the third country in Europe in terms of the value of archaeological monuments.

An excerpt from the article 34 facts about Bulgaria

This country is famous for its huge number of temples (monasteries) - the largest and most famous of them is the Rila Monastery, located at the foot of the Rila Mountains massif. As one of the oldest European countries, Bulgaria can boast of an extraordinary cultural heritage. An example is the settlement of Nessebar, founded 3000 years ago, which is an architectural and archaeological reserve, and the monuments there are included on the UNESCO World Heritage List.