4-3-20 Toranomon, Minato-ku, Tokyo
20 fl. above the ground, 4 fl. below the ground and one-story rooftop structure
Kamiyacho Sta.
Directly connected to the station (Hibiya Line)
Roppongi-itchome Sta.
8 min on foot from Izumi Garden Tower Exit (Namboku Line)
Onarimon Sta.
10 min on foot from A5 Exit (Toei Mita Line)
| Rental area of typical floor | 1,144.74m²（346.2tsubo） |
| Air conditioning | [Around the core of the building] Central air-conditioning system on each floor with single duct system （variable-volume air system） [Around the perimeter] Convectors with wall-through heat pump units |
| Typical ceiling height | 2,700mm |
| Typical ceiling specification | Ceiling system with louvered lighting fixtures laid out on a grid |
| Typical floor load | 500kg/m² （800kg/m² at heavy load zone） |
| Typical floor specification | Carpet tile over 70mm high free access floor |
| Electricity for computer | 60VA/m² |
| Lot area | 4,199.94m² （approx. 45,210 sq. ft.） |
| Total floor area | 40,733.71m² （approx. 438,470 sq. ft.） |
| Number of floors | 20 fl. above the ground, 4 fl. below the ground and one-story rooftop structure |
| Building structure | Steel-framed building with partially steel-framed reinforced concrete and reinforced concrete structure |
| Parking | Self parking for 119 cars |
| Building completed | March 1993 |
