Hasunuma Seaside Park is a large prefectural urban park in Sanmu City, Chiba Prefecture. Developed as part of a recreational resort area, the park brings together a wide variety of facilities, including a water park, accommodation, observation areas, and sports facilities.
With its location near the Pacific coast, the park is a popular destination for families, groups, and active travelers. Visitors can enjoy swimming, amusement rides, sports, outdoor recreation, and relaxing resort stays all in one area.
Hasunuma Seaside Park was developed as part of the Kujuukuri Hasunuma Resort and has long been enjoyed by visitors seeking a seaside getaway.
Among its major attractions is Hasunuma Water Garden, a seasonal water park with numerous pools and slides. The park also features Kodomo no Hiroba, an amusement area for children, as well as a wide range of sports facilities.
The combination of water activities, amusement attractions, sports, accommodation, and natural surroundings makes Hasunuma Seaside Park suitable for visitors of many ages and interests.
Hasunuma Water Garden is a seasonal outdoor water park that operates during the summer. Its facilities are designed around natural themes and include a variety of pools and exciting water attractions.
Visitors can enjoy attractions such as tube slides and wave pools, making the water park a popular summer destination for families and groups of friends.
Thunder Slider is an exhilarating slide featuring a steep, almost vertical drop. Riders quickly descend the course for a thrilling experience.
Tornado Twist takes riders through a winding tube course, combining curves and speed for an exciting ride.
Wizard Slider is another thrilling attraction designed for riders who enjoy sliding headfirst through the course.
Splash Shaker is a large-scale water slide featuring dramatic climbs and drops from a height of approximately 20 meters, followed by an intense twisting section with powerful sideways movement.
Riders sit in a large inflatable raft, with up to three people able to ride together. The combination of height, speed, and twisting motion makes it one of the park’s most exciting attractions.
Kodomo no Hiroba is an amusement area designed especially for children. It features attractions such as a miniature train, a small roller coaster, and an observation tower.
The attractions are designed to be accessible to younger children, making the area a popular choice for families with small kids.
Hasunuma Seaside Park also has an extensive selection of sports facilities. Visitors can use tennis courts, baseball fields, soccer fields, park golf courses, ground golf facilities, and a gymnasium.
These facilities accommodate a wide range of users, from recreational players and families to sports enthusiasts and athletes who want to enjoy physical activities during their stay.
Hasunuma Garden House Marino is a resort-style accommodation facility located within the recreation area. Guests can choose from three types of accommodation: rooms in the main building, log houses, and cottages.
These options are suitable for a variety of travelers, including families, couples, and groups. The facility also has an Italian restaurant called Orizzonte, where guests can enjoy Italian cuisine during their stay.
The urban planning decision for Hasunuma Seaside Park was made on December 28, 1971, marking the beginning of its development as a major recreational area.
In 2021, the park also hosted a celebration event associated with the Tokyo 2020 Olympic Torch Relay. Among the participants were 33 torchbearers selected through a public application process in Chiba Prefecture from a total of 5,758 applicants.
By car, the park can be reached from the Matsuo-Yokoshiba Interchange on the Ken-O Expressway. From the interchange, take the Shibayama Haniwa Road and travel approximately 12 kilometers to the park.
Several bus services provide access to the park.
The Airport Shuttle Bus operates from Narita International Airport Terminal 2 and Matsuo Station. Visitors can get off at the stop in front of Hasunuma Seaside Park Parking Lot No. 1.
The Sanmu City Community Bus can also be taken from Narutō Station or Matsuo Station. Get off at the Hasunuma Seaside Park stop, located in front of Garden House Marino.
Orizzonte is an Italian restaurant located within the Makamegawa Comprehensive Park area. It provides an opportunity to enjoy a meal while visiting the surrounding recreation facilities.
For visitors spending the day at Hasunuma Seaside Park, stopping for Italian cuisine can be a pleasant way to take a break between outdoor activities.
There are also several related facilities in the wider area that can be included in a trip. These include Kodomo no Kuni and the Inubosaki Hotel, offering additional opportunities for sightseeing, accommodation, and leisure activities.
Hasunuma Seaside Park is a versatile recreation destination where visitors can combine seaside leisure with exciting attractions, sports, and resort accommodation. The summer-only Hasunuma Water Garden is a major attraction, while Kodomo no Hiroba provides entertainment for younger children.
The park’s extensive sports facilities and spacious surroundings also make it suitable for visitors who prefer active recreation. With accommodation and dining facilities nearby, it is possible to spend a full day—or even a longer stay—enjoying the area.
For travelers exploring the Kujukuri coast and the eastern part of Chiba Prefecture, Hasunuma Seaside Park offers a convenient combination of water activities, family entertainment, sports, and seaside resort experiences.