Hand-Dug Tunnels and Sun-Dappled Ocean Trails
Year-round coastal blooming flowers and invigorating sea breezes; breathtaking clear blue ocean waters on sunny days.
A celebrated 2.3-kilometer coastal walking paradise in Minami-Boso Quasi-National Park. In the Taisho era, literary figures and artists including Hakushu Kitahara were so enchanted by its mysterious tunnels, pine-covered cliffs, and sapphire coves that they named it 'Utopia' (Risokyo).
📷 663highland · CC BY-SA 4.0 · Source
Weather for your date
Today shows live hourly weather. Future dates show the best available report.
21°C
Partly cloudy
💧 4% rain chance · wind 10 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.
Year-round coastal blooming flowers and invigorating sea breezes; breathtaking clear blue ocean waters on sunny days.
Suitability
Stroller: Accessible
Nursing room: Not available
Noise level: quiet
Kids: Check terrain, weather and local accessibility before visiting.
Rules
Fire: no fire
Water access: ocean
Drones: permit required
Within 30 km, closest first.
A tower reached by a 60-metre walkway into the sea at Katsuura Marine Park, where windows 8 metres below the surface show fish swimming among the rocks.
ChibaA white lighthouse on the cliffs above Katsuura port, with views over the Pacific coast.
ChibaA long-running morning market in Katsuura where local vendors sell seafood, vegetables, snacks and prepared foods on rotating streets.
Steep sea cliffs about 20 metres high on the Boso coast between Katsuura and Kamogawa, named after a tragic local legend.
Sheer sea cliffs on the Boso coast near Osenkorogashi between Katsuura and Kamogawa, seen from National Route 128.
ChibaOne of the two small Benten islands beside the Tainoura promenade in Kominato, Kamogawa. The rocky islets, shrine landscape and protected sea form a compact coastal walk near Tanjoji Temple.
A quiet rocky coastline in Kamogawa with tide pools beside National Route 128.
ChibaA secluded, cliff-backed cove in Onjuku known for sea stacks and dramatic coastal light. It is a scenic photography stop rather than a managed swimming beach; access and footing can be hazardous when waves are high.
Place information: Official tourism source · Reviewed 2026-10-15