Completed in February 2025, Toranomon Alcea Tower stands as an impressive addition to Tokyo’s evolving skyline. This striking skyscraper is part of the “Toranomon 2-chome District Type 1 Urban Redevelopment Project” and represents a significant milestone in the ongoing transformation of this prime Tokyo area.
Strategic Location and Connectivity
The Toranomon area has emerged as one of Tokyo’s most sought-after districts, offering exceptional connectivity to the rest of the city. Toranomon Alcea Tower benefits from this prime location, situated near several key transportation hubs:
- Multiple Train Lines: Easy access to Toranomon Station (Tokyo Metro Ginza Line), Toranomon Hills Station (Hibiya Line), and Tameike Sanno Station (Namboku Line and Ginza Line)
- Major Roads: Proximity to Sotobori Street, Sakurada Street, and Roppongi Street
- Business District Advantages: Located close to the Kasumigaseki area, creating an ideal environment for companies requiring government access
The development enhances urban circulation through newly designed pedestrian networks that connect seamlessly to surrounding landmarks including Hotel Okura and neighboring developments.
Building Specifications and Modern Design
Toranomon Alcea Tower offers state-of-the-art specifications designed for international business requirements. Standing approximately 180 meters tall with 38 floors above ground and 2 floors below, this impressive structure encompasses approximately 180,600m², making it the second largest in the Toranomon area.
The steel-framed structure (partly steel-framed reinforced concrete and partly reinforced concrete) houses office floors from the 5th to 38th levels with a total area of 110,800m². Each standard floor provides approximately 3,300m² of space with ceiling heights of 2.9 meters, creating spacious working environments. The pillarless design allows for efficient and flexible office layouts, making it ideal for modern business configurations.
Business Support Facilities
The tower provides comprehensive support facilities designed to enhance the work experience. The Business Center spanning the 1st through 3rd floors includes shared offices operated under the “WAW” brand, which focuses on wellness and creating open workspaces. Conference facilities feature six meeting rooms accommodating up to 80 people, along with a STUDIO & LOUNGE for streaming seminars and events.
For employee wellness, the building includes a fitness center, complemented by a bike station with secure bicycle parking and shower facilities. The 22nd floor houses an exclusive tenant-only Sky Lounge with approximately 160 seats, serving as a versatile space for refreshment, remote work, and meetings during the day, while being available for reserved events and social gatherings in the evening.
The commercial area on the 1st and 2nd floors features a Marche Zone with 11 food venues offering diverse options and an open terrace dining area. Mobile ordering systems reduce wait times for busy professionals, while convenience stores and cafes cater to daily needs. A concierge service on the 2nd floor provides support for foreign-affiliated companies, hospitality assistance including restaurant reservations, and offers a dedicated Account Coordinator for hotel bookings in partnership with The Okura Tokyo.
Industry-Leading Safety and Sustainability
Toranomon Alcea Tower incorporates advanced safety features and environmental design. Its special grade (S grade) seismic performance uses seismic control structure to maintain structural integrity even during extreme earthquakes of intensity 7 class. The emergency power systems include a cogeneration system using medium-pressure gas and dual-fuel emergency generators providing electricity even during power outages. In the event of medium-pressure gas disconnection, oil tank reserves ensure 7-day of emergency power capacity.
The building has earned significant environmental credentials, receiving ZEB Oriented certification for its office sections and S rank for CASBEE Architecture (New Construction), with a 41% reduction in primary energy consumption. Green spaces feature prominently, with the extension of the Akasaka-Toranomon Greenway and approximately 7,500m² of green area including deck, rooftop, and wall greening, creating vibrant public spaces with seasonal plantings.
Urban Circulation Improvements
The project addresses previous circulation challenges in the area through significant pedestrian network enhancements. Widened sidewalks improve pedestrian flow, while new pedestrian decks connect to neighboring developments, eliminating elevation differences that previously hindered movement. Road improvements include widening of surrounding streets and elimination of irregular intersections, particularly the troublesome intersection in front of the U.S. Embassy, resulting in smoother traffic flow throughout the area.
Future Development Plans
The Toranomon 2-chome District Urban Redevelopment Project represents a long-term commitment to area enhancement. The entire project, including urban infrastructure development, is expected to continue for more than 15 years, with completion scheduled in approximately 30 years. Ongoing collaboration with neighboring developments ensures a cohesive urban experience that will continue to evolve and improve.
Conclusion
The Toranomon Alcea Tower represents the next chapter in Tokyo’s urban development, combining innovative design, business functionality, and environmental consciousness in one of the city’s most strategic locations.
Q&A
When was Toranomon Alcea Tower completed?
The tower was completed in February 2025.
What makes the office spaces in Toranomon Alcea Tower unique?
The office floors feature 2.9 meter ceiling heights, pillarless spaces of over 3,300m² per floor, and flexible layouts suitable for modern workplace configurations.
How does the Toranomon Alcea Tower address disaster preparedness?
The tower incorporates seismic control structure, emergency power systems with 7-day backup capacity, and the same level of seismic performance as government disaster prevention facilities.
What amenities are available for tenants in Toranomon Alcea Tower?
Tenants have access to shared offices, conference facilities, fitness center, bike station, Sky Lounge, and concierge services, including support for foreign businesses.
The post Toranomon Alcea Tower: Tokyo’s New Premium Office Development first appeared on Housing Japan.
