The Board of the Real Alcázar has initiated the comprehensive restoration of the sculptural ensemble of the Mercury Pond, a Renaissance work of gilded bronze that is suffering from advanced deterioration. The original pieces will be displayed in a protected indoor space.
The Real Alcázar of Seville has begun work on the comprehensive restoration of the sculptural ensemble of the Mercury Pond, one of the most unique works of the Spanish Renaissance and one of the most important gilded bronze ensembles in Europe. The intervention, driven by the Board of the monument, aims to halt the deterioration caused by over four centuries of exposure to the elements.
The project is led by the managing director of the Real Alcázar, Ana Jáuregui, at the head of a multidisciplinary team of restorers, art historians, and scientists who will apply advanced techniques to ensure the preservation of the piece. The ensemble was created between 1576 and 1577 by the sculptor Diego de Pesquera and the founder Bartolomé Morel, and has presided over one of the most emblematic spaces in the gardens of the Alcázar for nearly 450 years.
The delegate for Finance and vice president of the Board, Juan Bueno, has emphasised the strategic importance of the restoration: “This action is fundamental to protect one of the greatest heritage treasures of Seville and Spain. Our commitment is to conserve this legacy with the utmost scientific rigor so that it can be enjoyed by future generations.” Bueno added that the work represents a key moment in the history of Seville, when the city was the great economic and cultural centre of the Western world.
Scientific studies conducted in recent years have revealed advanced deterioration caused by humidity, pond water, and environmental changes. Active corrosion processes due to chlorides —known as the ‘bronze disease’— have been detected, along with loss of the original gilding due to inadequate historical cleaning, ancient interventions with incompatible materials, and the accumulation of calcareous crusts that obscured the sculptural details.
Following the preventive disassembly in 2023, the Board deemed a comprehensive restoration essential to halt the degradation. The intervention follows international conservation principles: minimal intervention, reversibility, and respect for the authenticity of the work. Planned actions include the chemical stabilisation of the bronze, consolidation of the remnants of the original gilding, specialised cleaning of the surfaces, and complete technical documentation using high-precision technologies.
One of the most relevant aspects of the project is the decision to preserve the original pieces in an indoor space of the Real Alcázar with controlled environmental conditions. Technical reports conclude that returning the ensemble to the pond would reactivate corrosion processes due to permanent humidity and thermal variations. Therefore, once restored, the sculptures will be displayed in a room where the public can view them more closely and appreciate the richness of their details.
An exact replica created through three-dimensional scanning and contemporary casting will remain installed in the Mercury Pond, preserving the historical image of the garden and its hydraulic function, as conceived in the 16th century. The original ensemble weighs nearly 600 kilograms of gilded bronze and constitutes one of the best examples of European Mannerism applied to historical gardening.
The artistic quality of the work places it on par with the great monumental fountains of Italian Renaissance, although with a unique personality that adapts the classical language to the Seville technical tradition, making it a virtually unique case in the history of Spanish art. The restoration will also include a dissemination programme to raise awareness of the process and the heritage values of the ensemble.
Juan Bueno has highlighted that “each action is backed by strictly scientific criteria and by the coordinated work of a team of top-level specialists. The absolute priority is to ensure the conservation of an irreplaceable work, respecting all its historical and material values as much as possible.” The intervention will take place over the coming months, and it is expected that the original pieces will be exhibited to the public once the work is completed.
You may also like
