Teams

Christophe Batard

A graduate of the École d'Architecture de Bretagne in 2000 and winner of the State Urban Planning Architect Competition in 2001, where he graduated at the top of his class, he has been Chief Architect of Historic Monuments since 2005. In this capacity, he is responsible for iconic sites and buildings such as Angers Cathedral and Castle, Fontevraud Royal Abbey, Vincennes Castle, the Rambouillet National Estate, and the Hôtel national des Invalides in Paris.

Co-managing partner and founder of the 2bdm and ARTENE agencies, he has led numerous restoration, conversion, and contemporary development projects, including the Musée du Grand Siècle in Saint-Cloud, the Pont de Pierre in Bordeaux, the Romanesque kitchens and the Museum of Modern Art in Fontevraud, as well as the Hôtel du Châtelet and the Memorial to the Martyrs of Deportation in Paris. His practice is accompanied by a reflection on the place of monuments in their environment and the evolution of their uses, in collaboration with public contractors and heritage institutions.

Christophe Bottineau

He graduated from the École Nationale Supérieure d'Architecture de Paris-Tolbiac in 1993, while also studying art history at the Sorbonne and the École du Louvre. He graduated from the École de Chaillot in 1997 and passed the competitive examination to become chief architect of Historic Monuments in 2001.

He first worked in Haute-Saône, Belfort, Moselle, and Bas-Rhin. He is now responsible for the 1st and 4th arrondissements of Paris, the Hôtel de la Marine, located on Place de la Concorde, and the Basilica of Saint-Denis. He works in particular on the Palais-Royal, Place Vendôme, Sainte-Chapelle, Conciergerie, the Palais de Justice, as well as on numerous private mansions and iconic châteaux.

As co-managing partner and founder of the agencies 2bdm and ARTENE, he leads restoration, conversion, and contemporary intervention projects on major buildings. He has been a member of the National Heritage and Architecture Commission (CNPA) since 2022.

Stéphane Choisie

A graduate architect DPLG from the Nancy School of Architecture in 2000 and heritage architect at the Centre des hautes études de Chaillot in 2005, before joining 2bdm, he worked with Christophe Batard (2005-2009) and Thierry Algrin (2001-2005), participating in particular in the restoration of Beauport Abbey, Sainte-Marie-du-Mont Church, and several remarkable cathedrals and chapels.

He is involved in emblematic projects such as the Musée du Grand Siècle in Saint-Cloud, the Pont de Pierre in Bordeaux, the new Musée de la Libération and the Catacombes in Paris, as well as the restoration of the municipal theater in Cherbourg. The company is also active in Brittany and Normandy.

Thomas Clouet

A graduate of ENSAIS Strasbourg in 2005 and École de Chaillot in 2008, Thomas Clouet, partner at 2bdm, is an ENSAIS architect, heritage architect, and chief architect of Historic Monuments. In this capacity, he is responsible for the Ardennes and Moselle departments, as well as the 10th, 11th, and 12th arrondissements of Paris.

Initially working as a project manager for Jacques Moulin, he has been with 2bdm for around 20 years. In particular, he has led all studies and restoration work on the Basilica of Saint-Denis since 2010: restoration of the western façade and south rose window, refurbishment of the crypt and liturgical choir, restoration of the ambulatory and its stained glass windows, and reconstruction of the north spire. He also oversaw the exterior restoration of the Royal Chapel at the Palace of Versailles.

Today, in addition to his statutory duties, he works mainly in Metz (historic monuments of the city), Charleville-Mézières, and Seine-et-Marne (monuments in Provins, Lagny, Montereau, Nemours, etc.). Thomas Clouet is a member of the Société des Amis du Vieux-Reims (Friends of Old Reims Society) and the Société française d'archéologie (French Archaeology Society), for which he has published several articles in the Bulletin monumental.

Frédéric Didier

Graduated from the Paris-La Seine School of Architecture and the École de Chaillot in 1985, former student of the École du Louvre – specializing in architecture and interior design of large residences – Frédéric Didier came top of the ACMH competition in 1985-86 and, at the age of 26, became the youngest Chief Architect of Historic Monuments since 1920. After starting his career in Côte-d'Or and then in Deux-Sèvres, in 1990 he took charge of Saône-et-Loire, the Palace of Versailles, its outbuildings and the Grand Trianon, then the city of Versailles from 2000 onwards. He is still in charge of the Palace of Versailles, the Grand Trianon, and the presidential residence of La Lanterne, as well as the Yonne department since 2020 and the Vienne department since 2023. Since 2022, he has been Inspector General of Historic Monuments, in charge of the Hauts-de-France and Normandy regions. 

At Versailles, he has overseen more than a hundred projects, including the restoration of the Hall of Mirrors (2004-2007), the restoration of the trophies and roof ornaments of the palace (2005-2010), the reconstruction of the royal gate (2008), the reopening of the Royal Opera (2009), the exterior restoration of the Royal Chapel (2018-2022), the restoration of Madame Du Barry's apartment (2022), and the restoration of the antechamber of the bull's-eye window and the Gate of Honor (2024). In Burgundy, in addition to preserving some fifty Romanesque churches, he has led complete restorations of prestigious buildings such as the cathedrals of Autun and Chalon-sur-Saône, the Abbey of Cluny, and the Basilica of Vézelay, not to mention numerous private castles. In Poitou, he has played a decisive role in the restoration of the castles of Thouars and Oiron, the castle of Purnon, and the abbey of Nouaillé. His architectural choices, often noted and sometimes debated, fuel discussions on the future of historic monuments in France. 

Co-founder of the 2bdm Architectes agency, he has also been heavily involved in institutional and cultural life for nearly 50 years, serving as vice-president of the Union Rempart and working with numerous heritage associations. Former president of the Collège des Monuments Historiques and the Académie des Sciences Morales, des Lettres et des Arts de Versailles et de l'Île-de-France, he is now vice-president of Vieilles Maisons Françaises and sits on the board of the Société Française d'Archéologie and the Fondation Mérimée. He is a member of numerous national award juries promoting heritage restoration. A founding member of the editorial board of the journal Monumental, he regularly publishes scientific articles in specialist journals, including Versalia, as well as books on major restoration projects, and participates in numerous conferences and programs on heritage. 

Martin Mallard

Graduating as a heritage architect in 2012 and HMONP architect in 2017, he specializes in the management and design of complex heritage projects. He leads restoration and development operations, as well as managing multidisciplinary teams, including the Île de la Cité courthouse and several projects for cultural institutions.

He also participates in research and publication on historical and archaeological sites, with several contributions in specialized journals such as the Congrès archéologique de France, Monumental, and the Bulletin monumental.

Alexis Muller

Trained at architecture schools in Strasbourg, Seville, and Lyon, he graduated with a degree in architecture (HMONP) in 2010, then from the École de Chaillot in 2015. He worked for fifteen years with Jacques Moulin (ACMH) in Seine-et-Marne and with Frédéric Didier (ACMH) in Burgundy and at the Palace of Versailles, notably on the restoration of large decorative elements.

He currently holds the position of chief architect of historic monuments, responsible for the departments of Jura and Haute-Savoie, the Ferney-Voltaire estate, and the National Estate of Marly.

His education and career have been marked by a keen interest in archaeology, demonstrated in particular by his participation in the IFAO excavations at Tebtynis.