Architecture History | Hall of Nations — The 2017 Demolition That Exposed a Modern-Heritage Gap

Before dawn on 24 April 2017, demolition machinery was reducing the Hall of Nations at Pragati Maidan to rubble, erasing the sloping concrete lattice that had made the main exhibition hall legible from across its surrounding courts and ramps.

The building had been completed for the Asia 72 international trade fair on 3 November 1972, twenty-five years after Indian independence, as the principal pavilion of a government exhibition complex designed by architect Raj Rewal with structural engineer Mahendra Raj; its job was practical as well as representational, providing a single space able to hold displays ranging from small goods to heavy machinery while demonstrating what contemporary construction in India could accomplish.

Rewal and Raj answered that program with a square, chamfer-cornered hall shaped like a truncated pyramid, whose walls and roof formed one three-dimensional frame of repeating tetrahedral units, and the cast-in-place reinforced-concrete lattice cleared roughly 78 metres without internal columns while open and infilled triangles modulated direct sun and air in a modern counterpart to a jali screen.

This was not an imported steel kit: limits on time, industrial materials, and cost shifted the work toward concrete, timber formwork, bamboo scaffolding, and intensive site labor, with carpenters and construction families turning an advanced space-frame geometry into joints and members poured in place, so the hall’s architectural argument depended as much on builders’ work as on its named designers.

When the India Trade Promotion Organisation planned to replace much of Pragati Maidan with a new exhibition and convention complex, preservation advocates, professional groups, museums, and Rewal sought protection, but the Heritage Conservation Committee applied a rule excluding buildings under sixty years old and the Delhi High Court dismissed Rewal’s preservation petition on 20 April 2017; during the night of 23–24 April, while further legal action was still anticipated, ITPO demolished the Hall of Nations and related structures.

The loss changed the building from a working exhibition hall into evidence of a policy gap: a structure could be documented internationally as consequential modern architecture yet remain too young for Delhi’s operative heritage threshold, and the decision also replaced a labor-intensive post-independence experiment with a different state vision for the fairground rather than preserving it as part of the redevelopment.

Nothing of the Hall of Nations stands at the pinned former Hall No. 6 footprint today; Pragati Maidan has been rebuilt around Bharat Mandapam, so the 2008 photograph records surviving pre-demolition fabric, not present conditions, and responsible observation now means reading the documented footprint and archives rather than searching for an accessible ruin.

Photo: Ariel Huber, Hall of Nations, 13 August 2008, CC BY-SA 3.0, via Wikimedia Commons.