Important Dates
August 22, 2011
Open Ceremony.
August 29, 2011
Closing Ceremony.


  • August 2011

    The latest Instructions to arrive to Colegios Mayores are available here.
  • August 2011

    Final Program files are ready to download.

  • class="active"
Second Circular
Updated information in the web page
The King and Queen of Spain
Members: The President of the Community of Madrid
The Minister of Science and Innovation
The Mayor of the City of Madrid
The President of the Spanish National Research Council (CSIC)
The Rector of the University of Alcalá
The Rector of the Autonomous University of Madrid
The Rector of the University Complutense of Madrid


This is an archive of the official website for the IUCrXXI Congress at Madrid in 2011. Some images and text may be missing and some links no longer work.