Bulgarian architecture is a blend of various styles influenced by its rich history and diverse cultures. It features elements from the Roman, Byzantine, and Ottoman periods, showcasing a variety of structures such as churches, monasteries, and traditional houses. Notable examples include the Rila Monastery, a UNESCO World Heritage site, known for its stunning frescoes and unique design. In addition to religious buildings, Bulgarian architecture includes the distinctive National Revival style from the 18th and 19th centuries, characterized by wooden houses with colorful facades and intricate carvings. This style reflects the country's cultural identity and historical significance, making it an essential part of Bulgaria's heritage.