Environmentally-Friendly Use

Residential buildings are located along the natural slopes of sites and a pond and court are located in the center. The design allows residents to feel close to lush greenery and a biotope.

The storehouse and garden of an old mansion with 120 years of business history were restored so that its history and greenery could be inherited by this urban area. The restoration, which Takenaka handled from business planning to maintenance, creates a high value-added space that is treasured by passers-by.

“Step Garden” is a stepped rooftop garden that attaches importance to continuity between the vegetation zone and Tenjin Chuo Park. An image of a mountain that delights people with its seasonal changes is being created.

The building adopts technology for the utilization of natural energy, taking advantage of seasonal weather and climate, including natural ventilation, night purging (cooling the building at night), heating and cooling tubes (using the Earth’s thermal energy), and natural lighting. The building is effective in using natural energy to the maximum extent.

This is one of the world’s largest wooden domes built using laminated lumber from local Akita-sugi (Japanese cedar). It includes a pond to prevent flooding, and the effective use of natural water, including effluent groundwater and rain water collected from the dome.

The building effectively uses untapped river water for heating and cooling. By using water from the river, the building has a minimum influence on the air in the urban area to prevent the heat island phenomenon.