Climate Change Memorial Architecture: From Tower to Sepulcher

In the evolving discourse of climate change memorial architecture, projects are increasingly shifting from static monuments to dynamic systems that communicate environmental urgency. To Tower, Not to Sepulcher, a shortlisted entry of the Hourglass competition by Weiyu Xu, Hongyi Zhu, 金 飞灵, and Rui Su, positions itself within this paradigm as a living architectural narrative of biodiversity loss.

The project addresses the 6th mass extinction through a continuously transforming architectural system. Rather than representing memory as fixed, it constructs a spatial process where architecture becomes a temporal indicator of ecological collapse.

Concept: Architecture as a Living Index of Extinction

At the core of this climate change memorial architecture is a simple but powerful logic: every species is translated into a modular architectural unit. Initially, these units assemble into a vertical tower, symbolizing vitality, coexistence, and the abundance of life on Earth.

However, as species become extinct, their corresponding units are removed from the tower and relocated to pyramidal structures on the ground. These pyramids act as sepulchers, accumulating loss over time.

This transformation reframes architecture as a data-driven and emotionally legible system. The monument does not merely symbolize extinction; it performs it.

Spatial Narrative: From Vitality to Demise

The architectural journey unfolds across three distinct phases:

Initial Phase

The tower stands dense and complete, composed of millions of species-representing units. The surrounding pyramids remain translucent and unoccupied, representing a world where biodiversity is intact.

Intermediate Phase

As extinction accelerates, the tower begins to fragment. Units are systematically removed, exposing the structural skeleton beneath. Simultaneously, pyramids begin to fill, shifting from transparency to opacity.

Visitors experience this phase as a gradual unraveling of life, where the vertical monument loses density while the ground accumulates memory.

Final Phase

The tower is reduced to its bare structural core, stripped of its ecological content. The pyramids, now fully formed, dominate the landscape as silent records of disappearance.

The architecture becomes a stark visualization of irreversible loss, forcing a confrontation with the consequences of climate change.

Form Generation: DNA, Encoding, and Architectural Logic

The formal system draws inspiration from biological structures, particularly the DNA double helix. This reference is not merely aesthetic but conceptual.

Each species is encoded into a binary string, translated into geometric variations within a tetrahedral unit. These units aggregate to form both the tower and the pyramids, creating a direct relationship between biological identity and architectural expression.

This encoding strategy introduces a computational dimension to the project, aligning it with contemporary parametric and data-driven design methodologies.

Structural System and Assembly

The tower is composed of three primary components:

• Unit Facade: A dense aggregation of species units forming the outer layer
• Core Structure: A vertical circulation and support spine
• Helix Skeleton: A structural lattice inspired by DNA geometry that stabilizes the system

As units are removed over time, the facade dissolves, revealing the inner structural logic. This staged exposure reinforces the narrative of depletion.

On the ground, pyramids are assembled through a modular aggregation process, where individual units interlock through precise geometric constraints. This ensures scalability and adaptability across time.

Site Strategy and Masterplan

Located within a vast desert landscape in Egypt, the project establishes a stark contrast between environmental barrenness and architectural density.

The masterplan organizes pyramids in a distributed field, creating a navigable landscape of memory. Visitors move through a maze-like configuration, experiencing varying densities and scales of loss.

The desert context amplifies the project’s message, positioning the architecture as both artifact and warning.

Sustainability and Environmental Integration

Beyond its symbolic role, the project integrates performative environmental strategies. Each unit is designed to function as a micro-vessel for plant growth.

Concave surfaces collect soil and support vegetation, enabling the pyramids to act as distributed green systems within the desert. This introduces a paradox: while the architecture records extinction, it simultaneously attempts ecological regeneration.

This duality positions the project at the intersection of memorial architecture and environmental infrastructure.

Public Interface and Global Awareness

The project extends beyond its physical site through a digital interface. A global audience can engage with real-time biodiversity data, tracking the transformation of the monument as species decline.

This participatory layer transforms the architecture into a global communication platform, bridging the gap between data, space, and public awareness.

To Tower, Not to Sepulcher exemplifies a new direction in climate change memorial architecture. It replaces static commemoration with dynamic representation, where architecture evolves in response to ecological reality.

By encoding biodiversity into form and allowing that form to transform over time, the project creates a powerful synthesis of data, design, and narrative. It is not merely a monument to loss, but a system that makes loss visible, measurable, and impossible to ignore.

In doing so, it challenges architecture to move beyond representation and become an active participant in the discourse on climate change.