Dear all, This is the first announcement of "Utrecht Topology Feest 2018", a conference in honour of Ieke Moerdijk's 60th birthday, to be held at Utrecht University August 27-31. If you wish to attend, please register via the conference webpage: https://sites.google.com/site/utrechttopologyfeest2018/ Invited speakers: Clemens Berger Lawrence Breen* Joachim Cuntz Ezra Getzler John Greenlees Javier Gutierrez Kathryn Hess Vladimir Hinich Michael Hopkins* Martin Hyland Peter Johnstone Klaas Landsman Jacob Lurie Ib Madsen Janez Mrcun Paul-Emile Paradan Bertrand Toën Bernardo Uribe Alan Weinstein (* to be confirmed) Organizers: Benno van den Berg, Marius Crainic, Gijs Heuts, Jaap van Oosten With best regards, Gijs Heuts [For admin and other information see: http://www.mta.ca/~cat-dist/ ]