In fiscal 2021, a parliamentary workshop was held.

On Monday, November 29, "From Yokohama to the World! ・The world is Yokohama! Under the theme of "Yokohama International Horticulture Expo and Social Transformation-", a special professor at Tokyo City University and a landscaping artist and landscape architect, Shiro Wakui (Masayuki) was invited as a lecturer to hold a parliamentary workshop. .
Mr. Wakui seeks a new image of happiness based on the idea of NbS (Nature-based Solutions: a solution to social issues rooted in nature) and to hold the Yokohama International Horticultural Exposition in 2027. He gave a lecture on his thoughts for a new era that spreads out in green infrastructure.