Key Facts
• Yokohama mayoral election on August 3, 2025, saw Takeharu Yamanaka re-elected with 660,000 votes.
• The 2027 International Horticultural Expo will be held at the former U.S. Kamiseya Communication Facility site.
• The site spans 242 hectares, with 100 hectares designated for the Expo.
• Initial construction cost estimates in 2017 were ¥190–240 billion, now inflated to ¥417 billion.
• Yokohama City will bear ¥111 billion of the costs, with the rest split between the national government and private sector.
• The Expo expects participation from 70 countries and international organizations.
• Organizers project 10 million visitors over six months, but critics call this unrealistic.
• The site is 2 kilometers from the nearest train station, requiring shuttle buses for access.
• Local residents express concerns over environmental destruction and incomplete post-Expo development plans.
• Critics highlight potential traffic congestion and inadequate transport infrastructure.
• The Expo is scheduled to open in March 2027, leaving 1.5 years to address challenges.
Summary
The 2027 International Horticultural Expo in Yokohama has sparked debate over its feasibility and environmental impact. Re-elected Mayor Takeharu Yamanaka supports the project, but critics question the ¥417 billion construction cost, inflated from initial estimates, and the ambitious goal of 10 million visitors in six months. The site, a former U.S. military facility, is criticized for its remote location and potential ecological damage. Local residents worry about incomplete post-Expo development and traffic congestion. With 1.5 years until the Expo’s opening, significant challenges remain unresolved.
