Archaeologists recently made a captivating discovery beneath the grounds of Hotel Lagorce in Vannes, France: the remnants of a 14th-century castle, confirmed as the Château de l’Hermine, constructed in the 1380s under the patronage of John IV the Conqueror.

The extensive excavations, conducted between spring and autumn last year, were spearheaded by the National Institute for Preventive Archaeological Research (INRAP). Unveiling the grandeur of the past, the meticulous work revealed the castle's ground floor layout, showcasing a majestic ducal house measuring 42 meters in length and 17 meters in width, fortified with walls of remarkable thickness.

Designed as the dwelling for dignitaries like John IV, the castle's structure remains surprisingly well-preserved, a testament to its enduring architectural integrity. Embraced by a surrounding moat, its defensive prowess is evident, further underscored by the presence of a stout 'square tower' on its western flank.

The precision and artistry of the castle's construction astounded researchers, who noted the meticulous management of resources evident in the uniformity of materials and construction modules. Reflecting a singular phase of construction, the project attests to the significant financial and human investment orchestrated by John IV, who spared no expense in engaging the finest engineers and craftsmen of the era.

Among the remarkable discoveries were several staircases, including a remarkably preserved ceremonial staircase adorned with intricate decorations and a cushioned window, indicative of the castle's opulent grandeur. Evidence suggests the castle boasted three or four floors, evidenced by the discovery of latrines and drainage systems associated with upper levels.

A trove of artifacts sheds light on the castle's vibrant past, including coins, jewelry, and cooking utensils dating back to the 15th and 16th centuries. Remarkably, the humid environment preserved wooden items such as bowls and barrel fragments, offering a vivid glimpse into daily life within the castle walls.

Deep exploration of the moat yielded a rich assortment of artifacts, from clothing accessories to inscribed slabs, providing invaluable insights into the castle's history and its occupants' lifestyles.

The Château de l’Hermine, once a favored residence of Duke Jean IV, thrived for nearly a century before falling out of favor in the late 15th century, eventually succumbing to abandonment in the 17th and 18th centuries. Despite centuries of neglect, the recent excavation has reignited interest in this historical treasure, enriching our understanding of medieval life and architecture in France.