Aquariums are built to reshape expectation. Giving visitors a new vantage point to observe freshwater and marine life, these structures range in scale from simple exhibits to elaborate public aquaria. With a diversity of programming, they often include facilities for rehabilitation and conservation, as well as educational spaces to support learning and discovery. Today, modern aquariums offer glimpses into aquatic life both above water and below the surface.

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The use of steel in architecture is considered as one of the most innovative construction developments in history, allowing architects to create structures in scales they never thought they could. Fast-forward a few centuries, and steel remains as one of the most crucial materials in architecture. But there is a lot more to the material than just tensile strength and durability, some architects were well-aware of steel's potential and transformed it into lighting fixtures, facades, decorative elements, and finishes.

Here are 15 projects where architects looked beyond steel as structural support and explored its diverse possibilities in architecture.

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