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I.M. Pei

The portfolio of this Pritzker Laureate, spanning monumental cultural institutions in Boston, Syracuse, and Washington, DC, is characterized by a tense dialogue between razor-sharp, precise geometric masses and the highly tactile, board-formed or bush-hammered textures of their concrete and stone surfaces. This body of work serves as a vital reference when detailing the structural expression of vast public atriums, particularly where massive concrete blocks must appear to float effortlessly over multi-story voids or where delicate, curved glass walls intersect rigid orthogonal frames.

The OCBC Centre in Singapore by I.M. Pei, featuring massive curved concrete cores flanking three gridded office blocks.

OCBC Centre

Singapore · 1976

Photo · Photo by Shang Wei Kouo

A key precedent for structural expressionism and Brutalist high-rise design, demonstrating how massive concrete cores can flank and support suspended, gridded office volumes.

What we like about this project
The office windows are grouped into three distinct suspended pods rather than a continuous curtain wall.

Materials

  • concrete
  • textured-plaster
  • glass
  • steel

Visual identifiers

  • brutalist-tower
  • concrete-cores
  • cantilevered-blocks
  • gridded-facade

Style tags

  • brutalist
  • late-modernist
  • structural-expressionist

Visual tags

  • brutalist
  • structural-expressionism
  • high-rise
  • monolithic
  • urban-landmark
Geometry
The tower is composed of two massive, semi-circular concrete service cores flanking three distinct, cantilevered office blocks. Each block features a grid of deeply recessed windows.
Facade system
Precast concrete window units recessed within a structural frame.
Structural guess
Reinforced concrete core-and-cantilever system
Spatial scale
A monumental high-rise tower of over fifty stories, dominating the surrounding urban fabric.
Lighting
Bright, direct daylight casting soft shadows within the window recesses and highlighting the curved profile of the concrete core.
Atmosphere
A powerful, monumental presence rising cleanly into a bright sky.
Environmental context
Set within an urban skyline, framed by classical stone columns in the foreground and other mid-to-high-rise structures in the distance.
Spatial experience
The building reads as a monumental, sculptural vertical mass. The contrast between the smooth, solid concrete cores and the highly textured, gridded office volumes creates a powerful sense of structural expression.
Composition rhythm
Three stacked, identical office modules separated by structural transition zones, balanced by the continuous verticality of the side cores.
Style reading
Late Modernist Brutalism
Program
Commercial office headquarters
Perspective
Exterior Facade
Discipline
architecture
Materials
concrete, textured-plaster, glass, steel
Visual identifiers
brutalist-tower, concrete-cores, cantilevered-blocks, gridded-facade
Style tags
brutalist, late-modernist, structural-expressionist
Visual tags
brutalist, structural-expressionism, high-rise, monolithic, urban-landmark
Geometry
The tower is composed of two massive, semi-circular concrete service cores flanking three distinct, cantilevered office blocks. Each block features a grid of deeply recessed windows.
Facade system
Precast concrete window units recessed within a structural frame.
Structural guess
Reinforced concrete core-and-cantilever system
Spatial scale
A monumental high-rise tower of over fifty stories, dominating the surrounding urban fabric.
Lighting
Bright, direct daylight casting soft shadows within the window recesses and highlighting the curved profile of the concrete core.
Atmosphere
A powerful, monumental presence rising cleanly into a bright sky.
Environmental context
Set within an urban skyline, framed by classical stone columns in the foreground and other mid-to-high-rise structures in the distance.
Spatial experience
The building reads as a monumental, sculptural vertical mass. The contrast between the smooth, solid concrete cores and the highly textured, gridded office volumes creates a powerful sense of structural expression.
Composition rhythm
Three stacked, identical office modules separated by structural transition zones, balanced by the continuous verticality of the side cores.
Style reading
Late Modernist Brutalism
Program
Commercial office headquarters
Perspective
Exterior Facade
Discipline
architecture

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  • Firms
  • Patterns

AI Native Apps

  • AI Mode Search
  • SoftMarket
  • 2nd Brain

About HappyCluster

  • About
  • How it works
  • Contact

Connect

  • Waitlist
  • X
  • GitHub

Legal

  • Privacy
  • Terms

HappyCluster

© 2026

The OCBC Centre in Singapore by I.M. Pei, featuring massive curved concrete cores flanking three gridded office blocks.

OCBC Centre

Singapore · 1976

Photo · Photo by Shang Wei Kouo

A key precedent for structural expressionism and Brutalist high-rise design, demonstrating how massive concrete cores can flank and support suspended, gridded office volumes.

What we like about this project
The office windows are grouped into three distinct suspended pods rather than a continuous curtain wall.

Materials

  • concrete
  • textured-plaster
  • glass
  • steel

Visual identifiers

  • brutalist-tower
  • concrete-cores
  • cantilevered-blocks
  • gridded-facade

Style tags

  • brutalist
  • late-modernist
  • structural-expressionist

Visual tags

  • brutalist
  • structural-expressionism
  • high-rise
  • monolithic
  • urban-landmark
Geometry
The tower is composed of two massive, semi-circular concrete service cores flanking three distinct, cantilevered office blocks. Each block features a grid of deeply recessed windows.
Facade system
Precast concrete window units recessed within a structural frame.
Structural guess
Reinforced concrete core-and-cantilever system
Spatial scale
A monumental high-rise tower of over fifty stories, dominating the surrounding urban fabric.
Lighting
Bright, direct daylight casting soft shadows within the window recesses and highlighting the curved profile of the concrete core.
Atmosphere
A powerful, monumental presence rising cleanly into a bright sky.
Environmental context
Set within an urban skyline, framed by classical stone columns in the foreground and other mid-to-high-rise structures in the distance.
Spatial experience
The building reads as a monumental, sculptural vertical mass. The contrast between the smooth, solid concrete cores and the highly textured, gridded office volumes creates a powerful sense of structural expression.
Composition rhythm
Three stacked, identical office modules separated by structural transition zones, balanced by the continuous verticality of the side cores.
Style reading
Late Modernist Brutalism
Program
Commercial office headquarters
Perspective
Exterior Facade
Discipline
architecture
Materials
concrete, textured-plaster, glass, steel
Visual identifiers
brutalist-tower, concrete-cores, cantilevered-blocks, gridded-facade
Style tags
brutalist, late-modernist, structural-expressionist
Visual tags
brutalist, structural-expressionism, high-rise, monolithic, urban-landmark
Geometry
The tower is composed of two massive, semi-circular concrete service cores flanking three distinct, cantilevered office blocks. Each block features a grid of deeply recessed windows.
Facade system
Precast concrete window units recessed within a structural frame.
Structural guess
Reinforced concrete core-and-cantilever system
Spatial scale
A monumental high-rise tower of over fifty stories, dominating the surrounding urban fabric.
Lighting
Bright, direct daylight casting soft shadows within the window recesses and highlighting the curved profile of the concrete core.
Atmosphere
A powerful, monumental presence rising cleanly into a bright sky.
Environmental context
Set within an urban skyline, framed by classical stone columns in the foreground and other mid-to-high-rise structures in the distance.
Spatial experience
The building reads as a monumental, sculptural vertical mass. The contrast between the smooth, solid concrete cores and the highly textured, gridded office volumes creates a powerful sense of structural expression.
Composition rhythm
Three stacked, identical office modules separated by structural transition zones, balanced by the continuous verticality of the side cores.
Style reading
Late Modernist Brutalism
Program
Commercial office headquarters
Perspective
Exterior Facade
Discipline
architecture

Related in this portfolio