A spectacular view at the western end of the Oga Peninsula, on the 40th parallel of north latitude!

Famous for its scenic beauty, it is an exquisite contrast of green land, blue sea, and sky that captivates the hearts of all who see it.

When you come here, please spend a peaceful time on the expanse of grass while looking at the panoramic view of the sea.

Be sure to take a peek at the monument on the 40 degree north latitude line, which is made of andesite produced from the Oga Peninsula.

Irimizaki Lighthouse, with its impressive black-and-white striped pattern, has been selected as one of the "50 Best Lighthouses in Japan.

Of the more than 3,000 lighthouses in Japan, only 16 of them are climbable.

Near the lighthouse, there are many restaurants and souvenir stores where visitors can enjoy the Oga Peninsula's famous Ishiyaki cuisine, as well as an undersea fluoroscope boat that allows visitors to observe the ocean floor through a glass window at the bottom of the boat.

General Information

Glass-bottom boat tickets
Adults: 1,100 yen
Elementary school students: 550 yen
Preschool-aged children: free
Opening Times
Glass-bottom boat operating hours
8:30 - 16:30
Glass-bottom boat services operate from May to October
Services are cancelled when the weather is bad
From Akita Station, 1 hour and 15 minutes by car via Route 101 and the Namahage Line.
Car Park
Parking: Available (free)
Official Website
Oga Akita Sightseeing Guide oganavi
Reviews (TripAdvisor)
30 minutes to 1 hour
Undersea fluoroscopic boats are closed in case of bad weather.


Commerce, Industry and Tourism Division
Oga City
Telephone Number