This document provides an overview of Bulgaria, including its history, culture, and attractions. Bulgaria has existed for over 13 centuries in Europe on the Balkan peninsula. Some of its most notable sites include the capital city of Sofia with ancient monuments and modern architecture, the UNESCO World Heritage site of Nessebar on the Black Sea coast, and the 10th century Rila Monastery, one of Bulgaria's most important cultural and historical monuments. The document also describes some Bulgarian customs like the spring holiday of Martenitsa and the Kukeri ritual to scare away evil spirits around New Year.