Hanoi Presents 3D Mapping Spectacle on the Imperial Citadel

Published on January 06, 2026 | Translated from Spanish
Photograph of the nighttime 3D mapping show at the Thang Long Imperial Citadel in Hanoi, showing colorful projections of dragons and historical motifs on the ancient stone walls, with the audience watching.

Hanoi presents a 3D mapping show on the imperial citadel

The Vietnamese capital Hanoi has organized a new nighttime visual experience that uses 3D mapping to project directly onto the structures of the Thang Long Imperial Citadel. This event is part of a cultural program aimed at showcasing the rich history of this site, declared a UNESCO World Heritage Site. The projections narrate historical and cultural stories through animations that cover the ancient walls, transforming the space into a dynamic canvas. 🏯

The technology that brings history back to life on site

The 3D mapping system uses high-luminosity projectors and specialized software to adjust the content to the irregular geometry of the citadel's walls. This process requires precisely 3D modeling the building and then generating video sequences that fit perfectly to its surface. The result is an immersive visual narrative that turns static architecture into a dynamic and lively screen.

Key components of the system:
  • High-power projectors: Ensure a bright and sharp image even in nighttime conditions.
  • Specialized mapping software: Handles deforming and adjusting animations to the irregular stone surface.
  • Precise 3D modeling: Digitally recreates the citadel's structure to plan projections with millimeter accuracy.
A small error in the mapping could make a legendary dragon seem to have an extra leg.

Integration into a broader cultural offering

This presentation is not an isolated event but is framed within a series of activities designed to attract visitors and offer a different heritage experience. Authorities manage public access with specific schedules and ticket sales. The main goal is to combine heritage preservation with contemporary proposals that explain its value in an accessible and attractive way for all audiences. 🎭

Technical and logistical challenges overcome:
  • Environmental conditions: Dealing with tropical humidity and insects attracted to the projector light sources.
  • Heritage protection: Installing technical equipment without damaging the centuries-old structures of the citadel.
  • Mapping precision: Ensuring animations align perfectly with the reliefs and textures of the historic walls.

A bridge between the past and the present

This 3D mapping show in Hanoi demonstrates how visual effects technology can serve as a powerful bridge between the past and the present. By transforming historic architecture into a narrative medium, it not only educates and entertains but also revalues cultural heritage for new generations. It is a clear example of how to innovate in cultural outreach without compromising the integrity of monuments. ✨