Tokyo Portcity Takeshiba is a new international smart-city complex on Tokyo Bay, with an office tower distinguished by its maritime-inspired design and smart technologies. Approximately 40 stories high and close to Hamarikyu Gardens and Tokyo Bay, the tower follows the concept of Creative Sail: white, flowing vertical elements resemble sails filled by the wind, giving the building the strength and elegance of a ship under sail. Ultra-clear glazing reflects the sky and water, relating the facade to its coastal surroundings. IoT and environmental systems, from contactless facial-recognition entry to continuous energy management, support its identity as a smart urban port. Its distinctive form and intelligent green technologies make it a new Tokyo Bay landmark.
Maritime Identity and Urban Context: Led by architect Hiroaki Hoshino, the design takes inspiration from the waterfront site. Continuous curved white aluminum panels suggest billowing sails while providing shade. Wave-like landscaping around the podium uses a coral-reef garden concept, with curved planting beds, colorful vegetation and winding paths. Offsetting the lower volumes of the office and neighboring residential towers creates open space and a shared maritime design language. These elements bring a light, poetic coastal identity into high-rise architecture.
A Smart and Sustainable City: As a Tokyo smart-city demonstration, the office building provides seamless connectivity and high-speed 5G communications for IoT applications. A central smart system monitors and adjusts air conditioning, lighting and security in real time. LEED and CASBEE certifications are supported by solar panels, rainwater recycling and rooftop planting. An open roof garden and observation deck use salt- and wind-tolerant plants to create a place to rest and reduce heat loads. Autonomous shuttles and smart parking also improve transport efficiency and reduce emissions. Building and infrastructure innovations bring technology, people and the environment together.
We provided integrated engineering services for curtain walls and decorative elements. The complex curved-panel system of the sail-shaped facade required 3D modeling and precision CNC fabrication of large curved aluminum panels, ensuring that each sail element met the specified curvature and surface quality. Concealed steel supports provide strength without interrupting the appearance. Prefabricated curtain wall units use ultra-clear low-iron glass to enhance waterfront views. IoT sensors and adjustable electrochromic films were installed within facade components so the envelope could work with central controls to vary light transmission and shading according to the weather and time. We coordinated design, fabrication, production, installation and commissioning, realizing both the sail-like exterior and smart curtain wall through integrated service.
With its symbolic sail form and advanced intelligent systems, the Takeshiba office tower brings aesthetics, technology and environmental design together on Tokyo Bay. Its Creative Sail concept expresses a city moving toward a smarter, more sustainable future.
