Sarushima Fortress

Where History, Nature, and Legendary Tales Meet on Tokyo Bay

About

Sarushima Fortress is a fascinating place where history and nature intertwine, despite being a small uninhabited island floating in Tokyo Bay. As you set foot on the island, the first things that catch your eye are the lush green forest and the moss-covered brick tunnels. These tunnels are part of the fortress built during the Meiji era, and they still convey the remnants of the former military facilities.

As you walk around the island, the chirping of birds and the rustling of trees echo through the silence. At your feet, stone pavements that have become one with nature over many years spread out, allowing you to feel the weight of history. Passing through the tunnels, the blue expanse of Tokyo Bay appears before your eyes, and the scenery of the Yokosuka city area on the opposite shore and the distant Boso Peninsula soothes the heart.

Sarushima once played an important role as a key point in the defense of Tokyo Bay from the Edo period to the Meiji era. Remnants such as gun battery sites and ammunition depots are scattered throughout the island, strongly retaining the traces of the military facilities of that time. These remains tell the story of the history of war and at the same time appeal to us about the importance of peace.

There is also an interesting anecdote called the “Sarushima Legend.” Long ago, it is said that monkeys living on this island crossed the sea and moved to the mountains on the opposite shore. This story is the origin of the island’s name and is cherished by the local people.

Today, Sarushima has been developed as a tourist destination, and in summer, many people visit to enjoy swimming and barbecues. However, the island’s natural environment and historical heritage are carefully protected, providing visitors with tranquility and healing.

By visiting Sarushima Fortress, we can feel both the beauty of nature and the weight of history at the same time. The lush green forest, moss-covered brick tunnels, and the blue expanse of the sea—the scenery woven by these elements will be deeply engraved in the hearts of those who visit.