LONDON — The Royal Institute of British Architects (RIBA) has presented American architects Tod Williams and Billie Tsien with International Fellowships at a special event in central London. RIBA International Fellowships reward the particular contributions that non-United Kingdom architects have made to architecture.

Speaking at the celebrations at the event at RIBA’s headquarters, 66 Portland Place in central London, RIBA President Stephen Hodder said, “The RIBA is delighted to honor our new International Fellows Tod Williams and Billie Tsien for their significant impact on the world of architecture. The inspiration and influence of their work extends far beyond American borders. They join an illustrious list of architects honored by the RIBA as International Fellows.”

The lifetime honor allows individual recipients to use the initials Int FRIBA after their name.

 For more information, visit www.riba.org.