Hotels in Bulgaria Bulgaria is an Eastern European country, with 380 km of coastline, bathed by the Black Sea, on its eastern border. The mountains of Bulgaria offer tourists perfect conditions for skiing. The country also boasts rich mineral springs, offering guests the best in Spa and relaxation tourism. The Stara Planina (Old Mountain) Balkan mountain range is the longest in the region and divides the country into two. The central plain known as the Plain of the Roses, which are the the source of aromatic oils, perfumes and many other cosmetic products.