Within Vitosha Mountain one of the most interesting landmarks is the Boyana Church (built in three stages - 11th, 13th and 19th centuries) considered the heralds of European Renaissance. Most interesting are the frescoes (1259), which art experts today rate them as a peak of realistic art of those times. The church is inluded in UNESCO List of world heritage. Remarkable are the frescoes portraying the donors of the church.