Luxembourg is preparing for its most significant royal event in decades—the transition of the Crown from Grand Duke Henri to his son Guillaume.
Fun fact: Luxembourg has no crown, so this ceremony is not a ‘coronation’ but an enthronement.
This “Trounwiessel” (Luxembourgish for “accession to the throne”) will unfold over three memorable days, combining centuries-old tradition with a distinctly modern Luxembourg celebration.
Then Hereditary Grand Duke Guillaume at the Luxembourg-American Business Awards in New York in 2024. HRH will become Grand Duke on October 3rd, 2025.
Friday, October 3rd, 2025: The Official Transition
The day begins with quiet ceremony and ends with public celebration in Luxembourg City’s historic center. The following times mentions on this page are all Luxembourg time, so 6 hours ahead of East Coast time.
Morning Protocol
- 10:00 – Grand Duke Henri’s formal abdication ceremony at the Grand Ducal Palace
- 11:00 – HRH Guillaume’s swearing-in ceremony, where he takes his constitutional oath before the Chamber of Deputies, affirming the nation’s democratic values and officially becoming Luxembourg’s new Grand Duke.
Public Celebrations
- 12:15 — The iconic balcony moment at the Palace—the Grand Ducal Family’s first public appearance as the new reign begins
- 01:10 PM — Welcome ceremony at City Hall
- 1:25 PM — Public walkabout at Place Guillaume II, where locals can meet their new Grand Duke
Private official celebratory events follow.
Despite the historic nature of the day, October 3rd (a Friday) remains a regular working day. The Prime Minister confirmed it won’t be declared a public holiday, though expect bustling crowds and temporary street closures around the Palace and Chamber areas.
Saturday, October 4: A Grand Tour of Luxembourg
The new Grand Duke and Grand Duchess embark on a whirlwind tour celebrating the country’s diverse civil society, visiting four municipalities before returning to the capital for an evening spectacle.
The Royal Route:
- Grevenmacher (12:30 PM) — Community gatherings and sporting events along the Moselle
- Wiltz (2:22 PM) — Cultural celebrations highlighting the town’s diversity
- Steinfort (4:20 PM) — Special tribute to healthcare workers at the Intercommunal Hospital
- Dudelange (5:40 PM) — Performances celebrating the city’s industrial heritage
- Luxembourg City (10:00 PM) — Grand finale highlighting the country’s vibrant musical scene with orchestral performances near the Red Bridge and Glacis square, complete with a choreographed “tram ballet” and nighttime light show.
Sunday, October 5: Traditional Thanksgiving at the Notre-Dame Cathedral of Luxembourg
The weekend concludes with a solemn Te Deum service at the Notre-Dame Cathedral of Luxembourg, a traditional ceremony of thanksgiving that formally marks the new Grand Duke’s accession.
How to Follow Along
All major ceremonies will be broadcast live on television and streaming platforms. Local media, including RTL, will provide comprehensive coverage throughout the weekend. The official streaming link is here https://www.trounwiessel.lu/fr.html#live-stream
Practical Information for Visitors
Visitor Resources: For official viewing maps, walking routes, and localized event schedules, we highly recommend checking in with the Luxembourg City Tourist Office.
Transportation: Luxembourg’s free public transport system will be your best option, though expect heavier crowds near the city center on Friday afternoon.
Why This Moment Matters for Luxembourg Society
For the growing international community woven into Luxembourg society, including many Americans who have recently reclaimed or are pursuing Luxembourg citizenship, this represents a rare glimpse into the constitutional monarchy that has provided stability for generations and championed European integration. The transition actually began in October 2024 when Guillaume assumed the role of Lieutenant-Représentant. This strategic move ensured a smooth handover of state duties, making Friday’s ceremony the formal completion of a carefully planned succession.
Quick Reference
What happens at 11:00 AM on October 3rd? Guillaume recites his constitutional oath before the Chamber of Deputies, officially becoming Grand Duke.
Will there be a balcony appearance? Yes, at 12:15 PM on Friday—traditionally one of the weekend’s most photographed moments.
Are events limited to Luxembourg City? Not at all. Saturday’s tour spans four municipalities before the evening celebration returns to the capital.
What’s the official name for these events? The Court refers to it as the “Accession to the Throne” or “Trounwiessel” programme.
This once-in-a-generation celebration offers both Luxembourg citizens and international residents the chance to witness living history. Whether you attend in person or follow the broadcasts, the Trounwiessel weekend promises to be an unforgettable chapter in Luxembourg’s story.
Are you an American-Luxembourger who will be in Luxembourg from October 3rd-5th, 2025? Give us a shout!
