ENI Headquarters

Sixth Eni office building

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ENI Headquarters

Sixth Eni office building

The Sixth Eni Office Building in San Donato Milanese represents a cutting-edge model of corporate architecture, shaping a Campus of Research and Innovation.

The complex, articulated into three interconnected horizontal towers and a large central plaza, reinterprets the traditional vertical tower as a fluid horizontal organism integrated with the urban landscape.

Architecture, open spaces and community converge into a functional, open and inclusive ecosystem that combines operational efficiency, flexibility and high energy performance, with LEED Gold certification, offering an international benchmark for sustainable workplace design and innovation-driven corporate environments.

Nemesi Architects Eni Headquarters San Donato Milanese

Key data

Location San Donato milanese, Milan, Italy Year 2011-2022 Project Nemesi Architects (Partner Architects) and Morphosis Architects (Lead Architects). Area 65.000 m² Client Eniservizi Contractor Webuild (general contractor); Bodino, Simeon Group and Cantori (facade development) Photography Luigi Filetici

Figures

Nemesi Team Founding Partners Michele Molè and Susanna Tradati Design Lead Alessandra Giannone Design team Laura Barbieri, Alessandro Belilli, Alessandro Franceschini, Davide Giambelli, Paolo Greco, Daniele Lazzaretti, Paolo Maselli, Marco Marchionne, Alessandro Miele, Silvia Piccini, Paola Simoncelli Consultants Structural Engineering SCE Projet, Setec Batiment, Setec TPI Facades Arup MEP Engineering Manens-TiFS Engineering, Setec TPI, GAE Engineering (fire safety engineering) Landscape Pasodoble Sustainability/ LEED Setec Batiment

Status

Built

Awards & Recognitions

First Prize 2011 International Restricted Design Competition Saint-Gobain 2025 International Gypsum Trophy

Vision and Identity

The project interprets Eni’s identity through an architecture-landscape that dialogues with the history of Metanopoli and the legacy vision of Enrico Mattei. The three towers emerge from the ground as flows of energy and radiate into the landscape, shaping the large central plaza-cave.

Each tower is autonomous but integrated into an overall system, creating visual and functional continuity and regenerating the surrounding area with an open and inclusive approach. The sculpted basement simulates the geological stratification of the land, and accommodates the common functions of the campus.

Nemesi Architects Eni Headquarters San Donato Milanese

Architecture and Community

The complex hosts flexible office spaces for over 4.600 workstations, executive areas, an auditorium, meeting rooms and collective services. Bridge walkways, courtyards and roof gardens connect the towers, transforming daily work into a collective experience.

Spatial organization balances rationality and dynamism, providing clear circulation and adaptable environments capable of evolving with the demands of innovation and collaboration.

Nemesi Architects Eni Headquarters San Donato Milanese
Nemesi Architects Eni Headquarters San Donato Milanese

Technological and Engineering innovation

Double-skin facades with parametric metal-framed cladding ensure energy efficiency and control of natural lighting. Green roofs, photovoltaic panels, and natural ventilation systems reduce consumption and support the overall sustainability of the complex.

The bridge between Icon Tower and Landmark Tower uses advanced lattice truss structures, while the integrated building systems strategy ensures efficiency, reliability, flexibility, and centralized management, optimizing both performance and long-term maintenance costs.

Nemesi Architects Eni Headquarters San Donato Milanese
Nemesi Architects Eni Headquarters San Donato Milanese
Nemesi Architects Eni Headquarters San Donato Milanese

Sustainability and territorial impact

The Sixth Eni Building embodies integrated sustainability, combining passive and active sustainability strategies, optimized water management, and indoor and outdoor environmental comfort.

The complex strengthens its relationship with the urban context, contributing to the regeneration of Metanopoli while enhancing historical memory and reconciling contemporary innovation with identity and landscape.

Nemesi Architects Eni Headquarters San Donato Milanese
Nemesi Architects Eni Headquarters San Donato Milanese
Nemesi Architects Eni Headquarters San Donato Milanese
Nemesi Architects Eni Headquarters San Donato Milanese

Research, method and digitalization

Advanced digital design, with BIM and 3D modeling, enabled structural and performance optimization, simplified on-site management and future maintenance, ensuring world-class architectural and technological quality.

Nemesi Architects Eni Headquarters San Donato Milanese