One of the Largest Modern Japanese Gardens in the Kansai Region
Onzanso Garden was created by Nitta Chojiro, a successful businessman from Osaka and the founder of a world-renowned belt manufacturing company. Construction and landscaping took place from the early Taisho period through the early Showa period.
The garden covers approximately 59,000 square meters, making it one of the largest private gardens in Japan. Its design was influenced by Kizu Sosen, a representative of the Mushakoji Senke school of tea ceremony. Traditional Japanese garden aesthetics were combined with modern engineering and landscaping techniques to create a distinctive landscape that reflects the cultural atmosphere of early 20th-century Japan.
A Shioiri Garden Shaped by the Tides
One of the most remarkable features of Onzanso Garden is its tidal pond garden. Seawater is brought into several ponds within the grounds, allowing their water levels to change naturally with the rise and fall of the tide.
This type of garden, known in Japan as a shioiri-style garden, is relatively rare. Because the water level changes according to the tides, the appearance of the garden can be different depending on the time of day and the season.
Large natural rocks are arranged around the ponds, while blue stone embankments and bridges made from massive single stones add both strength and elegance to the landscape. Reflections of pine trees and historic buildings on the water create beautiful scenes that change throughout the year.
Historic Architecture and a Blend of Japanese and Western Styles
Onzanso Garden is not only famous for its landscape. Several historic buildings within the grounds are also highly valued as examples of early modern Japanese architecture.
The Main House, Kyoka-an Tea House, and Hamaza-shiki Pavilion are designated as Important Cultural Properties of Japan. Together, these buildings preserve the architectural style and lifestyle of the Taisho period.
The Main House – A Fusion of Japanese and Western Architecture
The Main House was built in 1915 and designed by Kino Shichiro, one of the leading architects of his era. Its exterior combines different traditional Japanese roof forms, including irimoya and yosemune styles, creating a varied appearance that changes depending on the viewing angle.
The interior features a fascinating combination of Japanese and Western design. The upper floor has a traditional Japanese-style layout, while the lower floor includes a Western-style ballroom. This unusual combination reflects the cultural changes taking place in Japan during the early 20th century.
The large reception room contains calligraphy plaques associated with prominent historical figures, including Admiral Togo Heihachiro and Katsura Taro. These details offer a glimpse into the elegant social atmosphere of the period.
The Tea House and Seaside Pavilion
Kyoka-an is a traditional tea house with a simple yet charming thatched roof. Its quiet surroundings provide an ideal setting for appreciating the spirit of Japanese tea culture and the beauty of simplicity.
The Hamaza-shiki Pavilion stands in an excellent location overlooking Kuroe Bay. Here, visitors can enjoy the sea breeze and take in the peaceful coastal scenery while experiencing the atmosphere of a traditional seaside retreat.
Natural Beauty Throughout the Garden
Pine groves spread throughout Onzanso Garden, creating a beautiful backdrop for the ponds, bridges, buildings, and pathways. Each season offers a different experience.
In spring, wisteria and azaleas add vivid colors to the landscape. The sounds of birds singing and fish moving in the ponds further enhance the peaceful atmosphere.
Rather than presenting nature as something separate from the garden, Onzanso incorporates the surrounding landscape into its design. This harmonious relationship between architecture, water, rocks, plants, and the sea is one of the defining characteristics of traditional Japanese landscape aesthetics.
Yanoshima Tunnel and the Hidden Seaside Area
A Hand-Carved Tunnel Leading Toward the Sea
One of the most intriguing features of Onzanso Garden is the Yanoshima Tunnel, a hand-carved passage approximately 37 meters long.
After passing through the tunnel, visitors reach a secluded coastal area that was once used as a private space by the Nitta family. The tunnel was created in part to allow refreshing sea breezes to enter the garden, making it an interesting example of how practical functions and landscape design were combined.
The stone-lined entrance and cool, quiet interior create a mysterious atmosphere. Walking through the tunnel feels almost like entering a hidden world within the garden.
A Secluded Beach with Beautiful Coastal Views
Beyond Yanoshima Tunnel lies a small beach and rocky shoreline. Once a private retreat for the Nitta family, this secluded area offers an especially beautiful view of the sea and sky.
The openness of the coast provides a striking contrast to the quiet garden landscape. Together, the garden and seaside area demonstrate how extensively Onzanso was designed to make use of its natural surroundings.
Cultural Heritage and the Legacy of Nitta Chojiro
Onzanso Garden and its historic buildings were recognized for their cultural importance, with the garden designated as a Place of Scenic Beauty and its historic structures designated as Important Cultural Properties.
Although the garden was originally created as a private villa for Nitta Chojiro, it is noteworthy that it was opened to the public during his lifetime. Today, the site continues to be preserved and managed by a public-interest foundation, carrying on the spirit behind its creation.
Nitta Chojiro as a Philanthropist
Nitta Chojiro was not only a successful entrepreneur but also actively involved in education and social welfare. He supported the establishment of schools, made charitable donations, and contributed to local communities in various ways.
Onzanso Garden can therefore be viewed as more than a luxurious private retreat. It also represents the values and social ideals of its creator, preserving an important chapter of Japan’s modern history within its landscape and architecture.
Highlights to Discover Throughout Onzanso Garden
The appeal of Onzanso Garden lies not only in the beauty of the entire landscape but also in the many distinctive features scattered throughout the grounds. Each element was carefully positioned as part of the overall composition of the garden.
The Main Gate – A Western-Style Entrance
The Main Gate features substantial concrete pillars and iron gates, giving it a distinctly Western architectural appearance. Such a design is unusual as the entrance to a traditional-style Japanese garden and reflects the modern character of Onzanso.
Passing through the gate marks the beginning of a tranquil world where historic architecture, carefully arranged scenery, and natural beauty unfold step by step.
The Bronze Statue of Nitta Chojiro
A bronze statue of Nitta Chojiro, the founder of Onzanso Garden, stands within the grounds. His dignified figure represents not only his achievements as a businessman but also his contributions to society.
The statue serves as a reminder that Onzanso is closely connected to the life, ideals, and legacy of the person who created it.
Choju Bridge – A Massive Blue-Stone Bridge
Choju Bridge is one of the most impressive features of the garden. Made from a massive single piece of Japanese blue stone, the bridge is approximately 9 meters long.
The powerful presence of the natural stone contrasts beautifully with the delicate surrounding landscape. The bridge is an excellent example of how Japanese gardens use large natural materials to create dramatic focal points while maintaining harmony with nature.
Kabukimon and Other Traditional Gates
Several distinctive gates are scattered throughout the garden, including the North Kabukimon, South Kabukimon, West Kabukimon, and Central Gate.
These gates are more than simple entrances. They function as carefully designed visual transitions, changing the visitor’s view as they move through the garden. This creates the Japanese aesthetic experience of discovering scenery gradually rather than seeing the entire landscape at once.
The South Kabukimon is particularly distinctive because of its graceful, woven-hat-shaped roof. The curved lines blend naturally with the surrounding vegetation. The North and West Kabukimon also feature individual designs that make them interesting architectural details.
Tunnel Kuchino-tei – A Peaceful Resting Place
Tunnel Kuchino-tei is a small resting pavilion located along the garden route. Visitors can sit down, admire the surrounding scenery, and enjoy the cool breeze flowing from the nearby tunnel.
It provides a pleasant place to pause during a leisurely walk and appreciate the changing views of the garden.
Yanoshima Tunnel – A Mysterious Passage Through the Garden
Completed in 1915, Yanoshima Tunnel is approximately 37 meters long and was carved by hand. Its stone-built arched entrance leads into a cool and quiet passage.
The tunnel was designed to bring sea breezes into the garden, demonstrating how practical engineering could be incorporated into the landscape without compromising its beauty.
The Secluded Beach – A Hidden Coastal Viewpoint
At the far end of Yanoshima Tunnel is a small beach surrounded by rocks. Once reserved for the Nitta family, this secluded coastal area now offers visitors an opportunity to appreciate the natural beauty surrounding the garden.
The expansive view of the ocean and sky contrasts with the intimate atmosphere of the garden and provides one of the most memorable experiences at Onzanso.
The Bantai Room – A Glimpse into Early Modern Life
The Bantai Room, located near the Main House, was once used as a waiting area for rickshaw pullers. Although modest compared with the garden’s main buildings, it provides valuable insight into the lifestyles and social customs of affluent Japanese households during the period.
Buildings such as this help visitors understand that Onzanso was once a living estate rather than simply a decorative garden.
Discover the Garden by Walking Its Winding Paths
Onzanso Garden was designed as a strolling garden, meaning that its scenery is intended to be discovered while walking through the grounds.
Visitors pass through gates, cross bridges, follow paths beside ponds, enter tunnels, and eventually reach the sea. Each change in location reveals a new view, creating a sense of movement and discovery.
The individual landmarks are beautiful in their own right, but their greatest appeal comes from the way they are connected. Taking time to walk slowly through the garden allows visitors to experience the carefully planned sequence of landscapes and appreciate the deeper beauty of Japanese garden design.
Access to Onzanso Garden
Onzanso Garden is approximately 10 minutes by car from JR Kainan Station. Visitors using public transportation can take a Wakayama Bus from the area around Kainan Station and get off at the Kotonoura bus stop, which is located close to the garden entrance.
A Peaceful Place Where History, Nature, and the Sea Meet
Onzanso Garden is far more than a beautiful Japanese garden. It is a unique cultural landscape where Japanese aesthetics, modern architecture, natural scenery, and the sea have been brought together in harmony.
Visitors can admire the garden from the traditional rooms of the Main House, experience the quiet atmosphere of Kyoka-an Tea House, walk through the historic Yanoshima Tunnel, and enjoy the expansive scenery of the secluded seaside area.
The garden also offers an opportunity to discover how Japanese society and architecture changed during the Taisho and early Showa periods. Its buildings and landscape preserve the sophisticated lifestyle, artistic sensibilities, and technological innovations of early modern Japan.
For travelers exploring Wakayama, Onzanso Garden is an excellent destination for experiencing a quieter and more refined side of Japan. Its combination of historic architecture, traditional garden design, changing tidal waters, and beautiful coastal scenery makes it a memorable place to visit and a fascinating example of Japan’s modern cultural heritage.