A French Historical Find: Archaeologists Uncover Hidden Chambers in the Palace of Versailles Archaeologists have made a groundbreaking discovery at the Palace of Versailles, a former royal residence in France. According to reports, a team of researchers has uncovered hidden chambers beneath the palace's famous Hall of Mirrors. The discovery was made using advanced imaging technology, which revealed the presence of previously unknown doorways and passageways. The hidden rooms are believed to have been built during the 17th century, and could potentially shed new light on the lives of French monarchs Louis XIV and Louis XV.