The Monument to the Unknown Warrior is a monument in located next to the 6th-century Church of St Sophia, on Alexander Nevsky Sqr. The monument commemorates the hundreds of thousands of Bulgarian soldiers who died in wars defending their homeland Bulgaria. Ceremonies involving the President of Bulgaria and foreign state leaders are often performed here.
The monument was designed and opened on September 22, 1981 for the 1300th anniversary of the establishment of the Bulgarian state.
The Monument to the Unknown Warrior features an eternal flame, turf from Stara Zagora and Shipka Pass, sites of two of the most important battles of the Russo-Turkish War of Liberation, a sculpture of a lion which is the national symbol of Bulgaria, and a stone inscription of by the national writer Ivan Vazov.