1. Boyana Church is a medieval Bulgarian Orthodox church located in the Boyana quarter of Sofia, Bulgaria. It is known for its unique and well-preserved frescoes dating back to the 13th century, which are considered masterpieces of Eastern European medieval art. The church has three parts - the eastern church, the connecting vestibule, and the western church. The frescoes inside depict various religious scenes and are renowned for their vivid colors and detailed execution.

2. The working time of Boyana Church may vary, so it is recommended to check the official website or contact them for the most up-to-date information. The contact phone number for Boyana Church is +359 2 959 0983.

3. To visit Boyana Church, it is necessary to purchase a ticket. The entrance fee for adults is 10 Bulgarian lev (approximately 5 euros), and for students and senior citizens, it is 5 Bulgarian lev (approximately 2.50 euros). There is also a separate fee for taking photographs inside the church. Boyana Church is easily accessible by public transportation. Visitors can take bus 107 from downtown Sofia to the Boyana neighborhood, where the church is located.