Yokosuka: Coast and landscape | LoreMania
Yokosuka's coast and landforms come into focus once you know two names: Sarushima, Tokyo Bay's only natural island, and Kannonzaki, the cape at the peninsula's tip.
This page traces how landform and history connect through Sarushima and Kannonzaki Park, two of Yokosuka's signature coastal landmarks.
Each section separates a park's name from the specific facilities and historic sites inside it, linked to Yokosuka City's own information.
Coast and landscape: names to know first
Sarushima, Tokyo Bay's only natural island, was a closed military fortress until the end of World War II and is now a leisure spot known for its brick fortifications.
Sarushima
Sarushima is Tokyo Bay's only natural island. It was off-limits to civilians as an Army and Navy fortress from the Meiji era until the end of World War II. Its brick tunnels, magazines, and gun batteries — built using a technique called French bond — remain today as one of Japan's largest surviving brick military structures. Just a roughly 10-minute boat ride from the pier at Mikasa Park, it's now a popular spot for barbecues and walking.
Source:横須賀市「猿島公園」
Coast and landscape: connections used in the quiz
Kannonzaki Park is a prefectural park at the Miura Peninsula's eastern tip. It holds Japan's first Western-style lighthouse and covers far more ground than the cape itself.
Kannonzaki Park
Kannonzaki Park is a prefectural park covering the area around Kannonzaki, the cape at the eastern tip of the Miura Peninsula jutting into Tokyo Bay. It contains Japan's first Western-style lighthouse, first lit in 1869, along with the Yokosuka Museum of Art and a natural history museum, plus rocky shores and beaches for tide-pooling. Note that the park's name covers more ground than the cape of Kannonzaki alone.
Source:横須賀市「横須賀中央エリア」
FAQ
Are all of Sarushima's brick structures built the same way?
No. The magazine buildings and other brick structures on Sarushima mix two different bricklaying techniques, French bond and Dutch bond, both visible within the same site — a detail that trips people up in harder questions.
Do 'Kannonzaki' and 'Kannonzaki Park' refer to the same area?
Not exactly. Kannonzaki is the name of the cape itself, while Kannonzaki Park is the larger prefectural park covering that area, containing the lighthouse, art museum, and natural history museum. Keeping that container relationship in mind helps avoid confusion.