Slated to open in spring, Zenbo Seinei will take the form of a long and slender wooden structure elevated on one side by steel columns.
The retreat will focus on healthy food and mindfulness and is aimed at tourists who want to escape from cities to a natural environment.
Retreat will allow visitors to "experience zazen"
Ban's elongated building is now under construction on a leafy spot in the northern part of the island.
Once complete, it will measure 90 metres in length and 7.2 metres in width. It will also feature a 100-metre-long wooden deck, designed as an open-air platform for zazen, a form of sitting meditation.
"We planned an accommodation facility where you can experience zazen on a small site with abundant nature on Awaji Island," explained Shigeru Ban Architects.
Pasona Group said it has been developed in response to the Covid-19 pandemic, which led "to major shifts in people's attitudes and values towards life and work".
"Amidst this, there has been a growing interest in opportunities to reassess one's own contentment in environments rich in nature, and in lifestyles that promote physical and mental well-being," the company added.
Restaurant forms part of design
Alongside the meditation spaces, Zenbo Seinei will contain guest accommodation and a restaurant serving dishes made from local vegetables as well as foods enjoyed by Buddhist monks.
On the surrounding 3,000-square-metre site, Ban is also designing an open-air bath and a cafe with a series of wooden huts for use in the future.
Ban founded Shigeru Ban Architects in Tokyo in 1985. He was named the winner of the Pritzker Architecture Prize in 2014 and was selected as an ambassador for the EU's New European Bauhaus in 2021.
His studio also recently completed the Tainan Art Museum building in Taiwan and a boutique hotel that winds through Japanese woodland.
Other retreats featured on Dezeen include a series of cave-like brick-clad pods in China by Studio Avoid and a proposal for a boutique eco-resort in the USA by Jendretzki Design.
The visuals are courtesy of Pasona Group.