The fortress was nicknamed 'The Three Acorns' due to the stone ornaments crowning its three defensive towers.
Construction of Fort Thüngen began in 1732 under Austrian rule.
Much of the fortress was dismantled in 1867 following the Treaty of London, which mandated the neutralization of Luxembourg's military defenses.
The current museum building integrates original 18th-century masonry with contemporary architectural interventions.
The casemates display rare remnants of the 'Gibraltar of the North' defensive system.
Musée Dräi Eechelen is housed within the renovated remains of Fort Thüngen, a 18th-century fortress designed to protect Luxembourg City. The museum focuses on the territorial evolution of the fortress and the history of Luxembourg from the 15th century to the mid-20th century. Visitors explore the restored casemates and underground tunnels that characterize the historic military architecture. The permanent exhibition features archaeological artifacts, weapon displays, and historical maps detailing the city's strategic defensive role. The structure is named after the three iconic acorns atop the fortress towers, which represent the city's historical moniker. It serves as part of the wider MUDAM park complex on the Kirchberg plateau. The site offers significant insights into the impact of foreign occupations on local fortification strategies.
From the fortress ramparts looking back toward the city’s historic Old Town and the Alzette valley.
Wear comfortable, flat walking shoes to navigate the stone floors and uneven tunnels.
Bring a light jacket as the underground tunnels maintain a significantly lower temperature than the surface.
Combine your visit with a walk through the surrounding Park Dräi Eechelen for panoramic views of the city valley.
Do not attempt to climb or touch the original stone walls in the tunnels to prevent damage to the historic structure.
Closed on Mondays.
