Satomi Castle Twilight & Bay Starlight
The floodlit castle keep against the starry night sky of southern Chiba, with reflections shimmering across Mirror Bay.
Perched atop Shiroyama hill on the southern tip of the Boso Peninsula, Tateyama Castle was the historic stronghold of the samurai Satomi clan, immortalized in the legendary epic Nanso Satomi Hakkenden. Every evening, the three-story white castle donjon is dramatically floodlit against the night sky, commanding a majestic night view over Tateyama Bay—historically known as Mirror Bay (Kagami-ga-ura)—and the tranquil fishing port lights below.

📷 Kentagon · CC BY-SA 4.0 · Source
Weather for your date
Today shows live hourly weather. Future dates show the best available report.
25°C
Mainly clear
💧 0% rain chance · wind 17 km/h
Hourly forecast
Forecast: Open-Meteo
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Typical viewing windows. Weather and bloom dates vary each year; these are not live forecasts.
The floodlit castle keep against the starry night sky of southern Chiba, with reflections shimmering across Mirror Bay.
Suitability
Stroller: Not recommended
Nursing room: Not available
Noise level: quiet
Kids: Hilltop castle requires walking up an incline path or stairs; handrail available.
Rules
Fire: no fire
Drones: banned
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Place information: Official tourism source