International Union of Architects


The UIA Bureau includes the President, Immediate Past President, Secretary General, Treasurer, and five Regional Vice-Presidents.  The Bureau members meet regularly between sessions of the UIA Council, to which they also belong.

  • Thomas Vonier - President - USA
    Thomas Vonier has worked on the challenges of urbanization, conflict, insecurity, and changing climate patterns. He participated in COP 21 (Paris) and COP 22 (Marrakesh), as well as in Habitat III (Quito). He makes regular media and conference appearances on matters related to the built environment, most recently on National Public Radio’s All Things Considered, speaking on urban security. Based in Paris and Washington DC, Thomas Vonier works with public and private clients to secure industrial operations, hotels, universities and commercial facilities. He also works with municipalities to improve urban security. A board certified security professional, Thomas led ground- breaking research for United States embassies and consulates, resulting in landmark recommendations to the US Secretary of State. He has lectured widely on architecture, and was a research affiliate with the Laboratory of Architecture and Planning at MIT.
  • Esa Mohamed - Immediate Past President - Malaysia
    B Arch (Hon 1) Hon Dr Architecture, Newcastle, Masters T&C Planning, Sydney FPAM, FPPM, FPPDM, RIBA, FAIA, FAScM, HonKIRA, Hon FIKA, Hon AIA Managing Director of Akitek Jururancang (Malaysia) Sdn Bhd (AJM), Immediate Past President of the International Union of Architects (UIA), Past President of Malaysian Institute of Architects (PAM), Past Chairman of ARCASIA and ASEAN Architects Council, Chairman of the Malaysia Monitoring Committees of APEC and ASEAN Architects. Aga Khan Award for Architecture in 2001, PAM Gold Medal in 2016.
  • Serban Tiganas - Secretary General - Romania
    Serban Tiganas is born and lives in Cluj-Napoca, Transylvania, Romania. After architectural studies in Bucharest he started his career by winning several competitions and working in different cities and teams. In 1997 he founded Dico and Tiganas, architecture and engineering, an interdisciplinary internationally awarded firm. Since 2001 he became activist for the profession in OAR, the Order of Architects, including two mandates of president, 2010 – 2018. He contributed internationally in ACE as board member and in UIA as council member. He is associate professor at the Technical University of Cluj – Napoca and hold a PhD in architecture.
  • Fabián Llisterri - Treasurer - Spain
    Graduate of Barcelona's School of Architecture, Fabián Llisterri spent most of his professional life outside Europe, managing development projects. For many years, he dedicated his time and energy to the professional organisation of architects, first as dean of the Community College of Valencia (COACV) and later as representative to the Consejo Superior de los Colegios de Arquitectos de España (CSCAE), and in various international organisations including the International Union of Architects (UIA), the Architect’s Council of Europe (ACE) and the Union of Mediterranean Architects UMAR.
  • Lorenz Bräker - Vice-president Region I - Switzerland
  • Nikos Fintikakis - Vice-president Region II - Greece
    Nikos Fintikakis, architect, National Technical University of Athens, and Heriot-Watt University, Edinburgh. Partner and Director of “SYNTHESIS AND RESEARCH Ltd”, Athens. Director of Past UIA WP Architecture and Renewable Energy Sources-ARES ( Board Member of the Association of Greek Architects, representative of the Technical Chamber of Greece in the Historical Buildings Committee of the Greek Ministry of Culture, Member of the Architecture Committee of the Ministry of Environment. National and International awarded projects in Greece and abroad ( His architectural work is specifically related in the fields of Bioclimatic and use of Renewable Energy Sources and Environmental Architecture.
  • Roberto Simon - Vice-president Region III - Brazil
    Roberto Simon graduated from Federal University of Paraná in Brazil in 1981, receiving his MSc from Brazil’s Federal University of Santa Catarina in 2010. He has been Executive Chairman & Architect in Studio Domo since 1982, completing design and build construction contractors for hospitals, universities, colleges, schools and residential developments. For the past eighteen years, he has been a professor at UFSC & UDESC in Santa Catarina, Brazil. He was a Visiting Professor at the University of Virginia from 1991 to 1992. He has been President, Vice President and member of the Superior Council of the Brazilian Institute of Architects – IAB as well as Federal Council member and founder of the Brazilian Council of Architecture and Urbanism - CAU, member of the UIA Council and is currently UIA Vice-President – Americas. He has participated in biennials, international and national competitions as well as national and international professional commissions.
  • Jong Rhul Hahn - Vice-president Region IV - Korea
    Jong-Ruhl HAHN has been serving UIA over 10 years as Alternate Council Member (2008-2011), Council Member (2011-2014), UIA 2017 Seoul Congress President (2015-2017. After receiving Master of Architecture degree from University of Michigan, Ann Arbor, Mr. HAHN built up his main career in SAMOO Architects (1993-2016), becoming Senior Principal. Including Presidential Medal of Culture, he received about 20 national architecture awards. As Region IV Vice President, he will continue to serve for better environment.
  • Mohammed Munyanya - Vice-president Region V -
WAD 2017: Statement by UIA President Thomas Vonier

General Secretariat

The UIA General Secretariat, placed under the responsibility of the Secretary General, is the Union's executive body and the administrative centre for the coordination of relations between the UIA Member Sections and their activities.

The General Secretariat assists architects and architecture students in getting into contact with professional colleagues throughout the world, from professional organisations and architectural schools to museums and media.

The General Secretariat helps architects to keep up to date with UIA activities, its partners and Member Sections.

General Secretariat of the International Union of Architects

Tour Maine Montparnasse - B.P. 158
33, avenue du Maine
75755 PARIS Cedex 15 – France

Tel : (33.1) 45 24 36 88 -
Fax : (33.1) 45 24 02 78