The architecture of Thai Hoa Palace in Hue is distinguished by its 'double-roofed compound house' structure (trùng thiềm điệp ốc), massive timber frame, and exquisite court ornamentation. Every architectural detail accentuates the supreme status of this principal throne hall, where the most sacred state ceremonies of the Nguyen Dynasty were conducted.
Thai Hoa Palace was built in the traditional double-roofed compound style, in which two buildings are joined under an interconnected roof system, creating a vast and seamless interior space. The structure comprises a front hall of 7 bays and 2 wing rooms and a main hall of 5 bays and 2 wing rooms, connected by a distinctive transition trough roof. The palace plinth is elevated above the courtyard, establishing a clear hierarchical distinction between the imperial throne hall and the outer grounds. The spatial layout, roof design, and architectural proportions all contribute to the imposing and solemn presence of this edifice along the primary axis of the Hue Imperial City.
One of the most remarkable features of Thai Hoa Palace is its timber structural framework with grand columns decorated with traditional gilded vermilion lacquer. Across the wooden components, motifs of dragons, clouds, and imperial patterns appear abundantly, showcasing the supreme craftsmanship of ancient artisans. The roof is tiled with yellow glazed tiles, featuring layered eaves and gracefully curved lines characteristic of Hue imperial architecture. The colors, materials, and decorative symbolism not only provide aesthetic brilliance but also strictly adhere to imperial sumptuary codes reserved for monuments of sovereign power.
The central hall houses the imperial golden throne beneath an intricately adorned royal canopy. The ensemble of horizontal inscribed boards, parallel couplets, poetic verses, and motifs carved into the timber components forms a harmonious decorative synthesis of literature, painting, and carving craft. In particular, the system of poetry and literature carved on Hue royal architecture possesses exceptional documentary and artistic value. In 2016, the Literature on Hue Royal Architecture was inscribed by UNESCO into the Memory of the World Committee for Asia and the Pacific register. This represents a remarkable heritage asset when exploring Thai Hoa Palace and the court arts of the Nguyen Dynasty.

Photo: The center of Thai Hoa Palace