The Hall of Kingdoms gets stuck: cost overruns from hidden surprises

Published on May 25, 2026 | Translated from Spanish

The Spanish government has justified the cost overrun and delay in the rehabilitation of the Hall of Realms at the Prado Museum. According to official sources, the appearance of hidden structural problems, the building's constructive heterogeneity, and the discovery of undocumented archaeological remains have driven up the budget and extended deadlines. A project that promised modernity now faces the harsh reality of the subsoil.

Hall of Realms rehabilitation, workers inspecting hidden cracks in stone walls, archaeologists discovering bone remains under raised flooring, exposed rusty steel beams during demolition, laser measuring tools on metal scaffolding, construction dust suspended in the air, work lights illuminating irregular basements, technical photorealistic style, dramatic construction lighting, rough textures of ancient mortar, depth of field showing heterogeneous construction layers, technical documentation on boards, reflective hard hats, complex structural restoration process

3D Scanner and Ground Penetrating Radar: Technology Reveals What History Hid 🛠️

Technical teams have used 3D laser scanners and ground penetrating radar to map the building. The data obtained reveals a structure composed of additions from different eras, with load-bearing walls that do not appear in the original plans and foundations with low load-bearing capacity. Material fatigue analysis indicates that some floor slabs need carbon fiber reinforcement. The cost of these studies was not anticipated.

Archaeological Remains: The Prado Discovers Its Building is an Archaeological Site 🏺

As with any major construction project, undocumented archaeological remains have appeared. The team has found foundations of an old barracks and lead pipes from the 17th century. The most curious thing: no one knew they were there, not even the architect's grandfather. Now, instead of hanging paintings, workers dig as if searching for treasure. The cost overrun includes picks, shovels, and infinite patience.