Sannai-Maruyama Site Archaeological Site

Large Jōmon archaeological site with reconstructed settlements

A major Jōmon-period archaeological site in Aomori Prefecture with reconstructed pit dwellings, exhibition halls and walking trails; visited for prehistoric artifacts and insights into Japan's Neolithic communities.

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Sannai-Maruyama Site at a Glance#

Address: Sannai‑Maruyama, Aomori 038-1232, Japan

Website: https://sannaimaruyama.pref.aomori.jp/

Hours: Daily 9:00am-5:00pm (museum/site hours may vary seasonally)

Admission: JPY 800-1,000 (museum/park complex admission; local rates may vary)

About Sannai-Maruyama Site#

The Sannai-Maruyama Site is a large Jomon-period archaeological site in Aomori Prefecture on northern Honshu, Japan, and is one of the most important prehistoric settlement sites in the country. It was rediscovered in 1992 and has been developed as an archaeological park and museum.

Excavations since the site’s 1992 discovery revealed sustained occupation during the Jomon period and a complex settlement with varied dwelling types and ritual features. The site has been conserved and interpreted for the public, with protective covers over key excavation areas and reconstruction of representative buildings.

The site lies in Aomori Prefecture in northern Honshu, not far from the city of Aomori, and is presented as an archaeological park accessible to visitors from the region.

  • Discovery date: First uncovered during construction work in 1992, extensive excavations turned the site into one of Japan’s foremost Jomon-period parks.
  • What to expect: Open-air displays and reconstructions make it possible to see both in-situ features and curated finds in the museum.

What to See#

  • Archaeological park: An outdoor archaeological park with excavated house-plots, roofed excavation areas and walking paths that present the settlement layout.
  • Museum / exhibition hall: A museum and exhibition building that houses finds from the site and explanatory displays about Jomon-period life and archaeology.
  • Reconstructed structures: A reconstruction area with rebuilt pit dwellings and a longhouse that demonstrate Jomon timber construction techniques for visitors.

How to Get to Sannai-Maruyama Site#

About 20-30 minutes by bus or 30-40 minutes by car from central Aomori City. Local buses run from Aomori Station to the Sannai‑Maruyama stop; check seasonal schedules.

Tips for Visiting Sannai-Maruyama Site#

  • Allow at least 90 minutes to visit the outdoor reconstructions and the museum displays; the site is spread out and informative panels are detailed.
  • Bring rain protection outside of summer - Aomori weather can change quickly and the site has exposed areas.
  • Visit the on-site museum for the best explanations of the settlement's pit houses and artifact finds; guided tours (when available) add valuable context.

Best Time to Visit Sannai-Maruyama Site#

Best visited in summer and autumn when the site's outdoor reconstructions are most accessible and weather is predictable.

Summer
Jun-Aug · 18-27°C
Warm weather and green surroundings make the reconstructed pit houses and longhouses easier to explore.
Autumn
Sep-Nov · 8-20°C
Clearer skies and autumn colors; cooler weather for walking the site and absorbing the open‑air displays.

Weather & Climate near Sannai-Maruyama Site#

Climate

Sannai-Maruyama Site's climate is classified as Hot-Summer Continental - Hot-Summer Continental climate with warm summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -4°C to 27°C. Abundant rainfall (1274 mm/year), wettest in September.

Air Quality: AQI 47 Good
Best Time to Visit
JulyAugustSeptember
Temperature & Rainfall
Temperature Range
33°
Warmest Month
-10°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -4° - 1° -7° 118 mm overcast 84% 4.6 m/s 0.1 low 9.5h
February Poor -4° - 2° -6° 99 mm overcast 82% 4.6 m/s 0.3 low 10.5h
March Poor -2° - 5° -2° 81 mm overcast 79% 4.5 m/s 0.5 moderate 11.8h
April Acceptable 3° - 13° 5° 71 mm overcast 79% 4.3 m/s 0.9 moderate 13.1h
May Good 9° - 18° 13° 74 mm overcast 82% 3.8 m/s 1.3 high 14.3h
June Good 13° - 21° 17° 85 mm overcast 84% 3.2 m/s 1.4 high 14.8h
July Very Good 18° - 25° 21° 107 mm overcast 86% 3.1 m/s 1.4 high 14.6h
August Very Good 19° - 27° 23° 138 mm overcast 84% 3.2 m/s 1.4 high 13.6h
September Good 15° - 23° 19° 143 mm overcast 80% 3.3 m/s 1.1 high 12.3h
October Good 8° - 18° 13° 116 mm overcast 78% 3.8 m/s 0.6 moderate 11.0h
November Acceptable 3° - 11° 4° 118 mm overcast 81% 4.3 m/s 0.3 low 9.8h
December Poor -2° - 4° -3° 124 mm overcast 84% 4.6 m/s 0.1 low 9.2h

Nearby Attractions to Sannai-Maruyama Site#