The Sanahin Bridge is one of the well-known engineering structures of medieval Armenia. It is located in the town of Alaverdi of Lori region, on the river Debed. The bridge was built by the Kyurikyan Queen Vaneni (Nane) to commemorate her untimely dead husband, King Abas I Kyurikyan, in 1192. The bridge is a single-arched construction. The right - side stern of the arched bridge is located on an elevated rock, and the left - side is on the lower bank of the river and as a result, this half of the bridge has a considerable rise towards the center, and the other half is smooth. The total length of the bridge is about 60 meters, it has a width of 3.3 m. in the middle part. There are high reliefs of panthers, on the stony dam of the bridge,which were the symbol of the Kyurikyans.