Matsumae Castle is a castle located in Matsumae in Hokkaidō, Japan, and is the northernmost castle in Japan. The only traditional style Edo period castle in Hokkaidō, it was the chief residence of the han (estate) of the Matsumae clan.
First built in 1606 by Matsumae Yoshihiro under orders from the Tokugawa shogunate, which required his clan to defend the area, and by extension the whole of Japan, from the Ainu 'barbarians' to the north. It burned down in 1637 but was rebuilt in 1639. It once controlled all passage through Hokkaidō to the rest of Japan.
The present castle complex, which dates from 1854, was constructed to deter attacks by foreign naval forces. Only the 30-metre-high tenshu (main tower) and a gatehouse survived destruction following the Meiji Restoration, which began in 1868. However, the tenshu burned down in 1949 and a concrete replica was built in 1960.
Today, all of the castle site is now a public park. Approximately 8,000 cherry trees are planted in Matsumae Park, which is approximately 150,000 m2 around the site of Matsumae Castle. More than 200,000 people visit the Matsumae Sakura Festival every spring to see cherry blossoms.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.