The Wall of Leo the Armenian

The Threat from the Bulgarians

In the year 813, the Byzantine emperor Leo the Armenian ordered the construction of a new wall to strengthen the northern defenses of Constantinople. The need for this wall came from the threat of the Bulgarian ruler Crum, who was preparing for a second attack on the capital.

Crum had already tried once to capture the city but failed. After his first defeat, he swore revenge. He also wanted to punish the Byzantines because of a treacherous assassination attempt made against him during peace talks with Emperor Leo Private Tours Bulgaria Varna.

The Failed Assassination Plot

A meeting was arranged between the two leaders near the Heraclian Wall, on the clear condition that both sides would appear unarmed. This was necessary because there was little trust between them. However, Leo secretly placed three archers in hiding, instructing them to shoot Crum on his signal.

When Crum arrived, he quickly noticed signs of danger. Just as he dismounted his horse, he grew suspicious. Leaping back into his saddle, he galloped away toward his army camp. The hidden bowmen released their arrows, and although one wounded Crum, he escaped with his life.

Byzantine historians later described the failure of this plot as God’s punishment for the sins of the empire. Crum, on the other hand, saw it as treachery and vowed to destroy Constantinople. He returned to Bulgaria to prepare for a massive new war, but he died before his plan could be carried out.

Building the Wall of Leo

Knowing that Crum might return, Leo immediately improved the city’s defenses. He built a new wall and moat in front of the older Wall of Heraclius. This additional barrier became known as the Wall of Leo the Armenian.

The wall stood about 77 feet west of the Wall of Heraclius and ran parallel to it for 260 feet before turning toward the Golden Horn. Its design was lighter than other city walls, measuring only about 8 feet thick. To give it strength, the wall’s parapet-walk was supported by arches, which also helped buttress the structure.

Towers and Gateways

To increase its defensive power, the wall was reinforced with four small towers. Two were placed on the side facing the Golden Horn, while the other two stood at the ends of the wall section that faced the countryside. Interestingly, the two western towers projected inward from the wall’s rear side, creating space for a gateway between them. This entrance matched the position of the Gate of Blachernae in the Wall of Heraclius, ensuring passage between the two defensive lines.

Importance of the Wall

Although not as massive as the famous Theodosian Walls, the Wall of Leo the Armenian was an important part of Constantinople’s layered defenses. It symbolized the empire’s determination to withstand foreign attacks, especially during a period when the Byzantines were under constant pressure from Bulgarians and other enemies.

By building this wall, Leo not only strengthened the city but also ensured that the sacred Blachernae quarter, home to the famous church of the Virgin, remained securely protected.