Genko Borui (Mongol Invasion Wall)

Overview

The Genko Borui (Mongol Invasion Defense Wall) consists of stone wall remnants built along Hakata Bay in the 13th century to defend Japan against the Mongol invasions. These simple but historically momentous walls represent one of the most dramatic episodes in Japanese history.

Highlights

• Original Stone Walls: Several sections of the original 20-kilometer defensive wall survive along the coast, reaching about 2 meters in height.
• Historical Markers: Interpretive signs explain the 1274 and 1281 Mongol invasions and the construction of the wall.
• Beach Setting: The walls sit on the Momochi–Nishi-jin coastline, combining a history lesson with an ocean-side walk.

History

After the first Mongol invasion of 1274 (Battle of Bun'ei), the Kamakura shogunate ordered the construction of a stone wall along the entire 20-kilometer shore of Hakata Bay. Completed by 1276, the wall proved decisive during the second Mongol invasion of 1281, preventing the enemy from establishing a beachhead. The walls were designated a National Historic Site in 1931.

Visitor Tips

• Tip 1: The best-preserved sections are near Momochi Seaside Park — combine with a beach visit.
• Tip 2: Free and always accessible; interpretive signs are in Japanese and English.
• Duration: 15–30 minutes.