Roppongi Hills Mori Tower
Tokyo
Height

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

1
To Tip:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).

238.1 m / 781 ft
2
Architectural:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

238.1 m / 781 ft
Floors

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

54
Below Ground

The number of floors below ground should include all major floors located below the ground floor level.

6
1 2 Roppongi Hills Mori Tower Outline
Height 238.06 m / 781 ft
Floors 54
Official Name

The current legal building name.

Roppongi Hills Mori Tower
Name of Complex

A complex is a group of buildings which are designed and built as pieces of a greater development.

Type

CTBUH collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CTBUH 'Tallest Buildings' lists.

Building
Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished
Completed, 2003
Country

The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.

City

The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

Address
Postal Code
106-0032
Function

A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

office
Structural Material

Steel
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.

Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.

Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.

Mixed-Structure
Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.

Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.

composite
Core
Concrete Filled Steel
Columns
Concrete Filled Steel
Floor Spanning
Steel
Official Website
Height

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

Architectural
238.06 m / 781 ft
To Tip
238.06 m / 781 ft
Floors Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

54
Floors Below Ground

The number of floors below ground should include all major floors located below the ground floor level.

6
# of Parking Spaces

Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.

2450
# of Elevators

Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).

41
Tower GFA

Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

380,105 m² / 4,091,416 ft²
Rankings
#
428
Tallest in Asia
#
12
Tallest in Japan
#
6
Tallest in Tokyo
#
298
Tallest Office Building in the World
#
197
Tallest Office Building in Asia
#
7
Tallest Office Building in Japan
#
4
Tallest Office Building in Tokyo
#
299
Tallest Composite Building in the World
#
246
Tallest Composite Building in Asia
#
3
Tallest Composite Building in Japan
#
2
Tallest Composite Building in Tokyo
Construction Schedule
1986

Proposed

2000

Construction Start

2003

Completed

Owner/Developer
Architect
Irie Miyake Architects and Engineers
Structural Engineer
Kozo Keikaku Engineering Inc.
MEP Engineer
Kenchiku Setsubi Sekkei Kenkyusho
Contractor
Kajima Corporation; Obayashi Corporation

Elevator

Toshiba Elevator and Building Systems Corporation (TELC)

CTBUH Initiatives

Inaugural Japan Symposium Rises to the Occasion in Tokyo


22 May 2015 - Event

Videos

18 October 2016 | Tokyo

This presentation was intended to introduce the upcoming CTBUH technical guide titled "The Space Between," which investigates the importance of publicly accessible spaces surrounding tall...

Research

28 October 2019

James Parakh, City of Toronto Planning Division

In the past 50 years, tall buildings and their relationship to streets and open spaces has evolved through various scales and typologies. As place-makers, how...

18 October 2016 | Tokyo

This presentation was intended to introduce the upcoming CTBUH technical guide titled "The Space Between," which investigates the importance of publicly accessible spaces surrounding tall...

12 November 2015 | Tokyo

Hiroo Mori, Director and Executive Vice President, Mori Building, is interviewed by Chris Bentley regarding the work of the late Minoru Mori, the winner of...

27 October 2015 | Tokyo

Hiroo Mori of Mori Building is interviewed by Chris Bentley during the 2015 CTBUH New York Conference at the Grand Hyatt New York. Hiroo discusses...

28 October 2019

James Parakh, City of Toronto Planning Division

In the past 50 years, tall buildings and their relationship to streets and open spaces has evolved through various scales and typologies. As place-makers, how...

01 September 2017

Toru Tsuchihashi & Masaharu Yasuda, Mori Building

Installing accelerometers in a building is an effective way to know how the building shakes when an earthquake happens. In this paper, we will introduce...

20 May 2015

Hiroo Mori, Roppongi Hills Mori Tower

As host of the 2020 Summer Olympics, Tokyo is undertaking a major redevelopment effort, giving long-planned projects new energy under the political impetus of the...

22 May 2015

Inaugural Japan Symposium Rises to the Occasion in Tokyo

CTBUH held its inaugural Japan Symposium at the Academy Hills lecture hall of the Mori Tower in Roppongi Hills, bringing together leading experts