The Holy Forty Martyrs Church, a treasure of Bulgarian history, was constructed and adorned with murals on the orders of Tsar Ivan Asen II. This historic site commemorates his triumphant victory over the Epirus Kingdom’s King Theodor Comnenus in 1230. By the mid-13th century, the royal monastery known as the Great Laurel had been established around the church, turning it into a cultural and spiritual hub. Within its nave, you'll find some of the most significant relics of Bulgarian history: the columns of Khan Omurtag (815–831), Khan Krum (803–814), and Ivan Asen II, all inscribed with historical texts.
Archaeological digs have uncovered the tombs of notable medieval figures, with the most fascinating being that of King Kaloyan. Assassinated during the siege of Thessaloniki in 1207, his body was later ceremoniously transported to the capital and buried with full honors. Among the church's hallowed grounds also lie the graves of one of Bulgaria’s greatest rulers, Ivan Asen II, and his wife, Anna-Maria.
The church once safeguarded the relics of St. Sava of Serbia and St. Ilarion of Muglen. Although St. Sava’s body was eventually returned to Serbia, his grave remains a pilgrimage site for many. One cannot overlook the church's role in a pivotal moment of history: it was here that Bulgarian independence was declared on September 22, 1908. For those interested in history and culture, visiting this church is a journey back in time, offering a glimpse into Bulgaria's rich past. The atmosphere is serene, and the stories embedded in its walls are waiting to be discovered.