As a result, Bulgaria is ecologically one of the cleanest countries in Europe, with exceptionally clear air and water. There are 7 national parks, protected 3000 natural sites and 17 biosphere reserves (mostly in Europe). 419 animal species and 63 plant species protected by law. Bulgarian Black Sea coast – a 380 km the cleanest and safest beaches in Europe. Many of them had awarded the prestigious status of 'Blue Flag'.
The average summer temperature 25-30 C. The holiday season lasts from April to May in the second half of October. In the second half of September, the number of tourists decreased, the period for those who prefer the "velvet season". Some of the hotels on the coast and opened in November. Given the fact that living costs in Bulgaria are much lower than in other countries, it is easy to see why the Black Sea coast is an ideal place for rest, especially given the growing number of reports from airports in many European countries. Despite the fact that the Bulgarian Black Sea coast, is a well-known and popular holiday destination, and such as Sunny Beach resort, has become a favorite destination for many foreign tourists since the late 1950s, in recent years, Bulgaria has become one of the fastest growing summer tourist destinations in Europe. Throughout past few years, demand exceeded supply by 20%! In 2005 Bulgaria has been marked as a country where people would most like to spend their holidays and at least 350,000 Britons visited summer resorts in Bulgaria in 2007 – almost two times more than in 2005.