Sekizaki Kaisei-kan

Observation Tower
A scenic overlook and astronomical observatory located on the eastern edge of Oita City in Saganoseki. The astronomical observatory is outfitted with a 60-centimeter reflecting telescope and here visitors can observe seasonal astronomical phenomena, as well as the sun and bright stars during the day, and a glittering night sky in the evening. The scenic overlook commands a sweeping view of the Hoyo Strait; there's also a museum area with space-themed exhibits such as meteorites gathered at the south pole, and exhibits on the nearby ocean; a shop; and a restaurant. In addition, events such as astronomical observation and crafting classes are held here.

Spot details

Oita Oita-shi Saganoseki 4057-419 map map Map
10:00-18:00 (until 22:00 on Friday-Sunday, Public holidays and Aug.)
Tuesday (next weekday if it is a public holiday), New Year's Holiday (12/29-1/3)
[Admission fee]

[Viewing the astronomical observatory]
[High school student]210yen
[Junior High School Students and below, those with a disability certificate (person only)] Free

[Planetarium] Viewing (reservation required)]
[General] 500 yen
[High school student] 250 yen
[Elementary School Students] 100 yen
[Pre-schoolers and those with a disability certificate (persons with disabilities only)] Free
Parking Lot
Credit Card
Available(VISA, MasterCard, JCB, AMEX, UnionPay)
Not available
*Renewal Grand Opening is scheduled for Early Nov. (currently open)
Average budget
[Lunch] 1-1,000 yen
[Night] 1-1,000 yen
Estimated stay time
60-120 minutes
Wheelchair accessible
Infant friendly

Information Sources:  NAVITIME JAPAN


  • Great place to watch the stars!
    5.0 Reviewed : 2013.11.23
    Although it took a long time from my place to this Observatory ( I was from Beppu, so i had to take the train to Tozaki then bus to Saganoseki and taxi to this observatory), it was really worth the...
  • Saganoseki Observatory
    5.0 Reviewed : 2012.06.24
    Very friendly Astronomers there, you are bound to meet one that speaks good english; they dont mind to take the time to explain things to you. A nicely isolated area away from city lights on the...
  • リニューアル
    4.0 Reviewed : 2023.12.03

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