An asterisk (*) indicates a full congress; all other meetings have been international working meetings, unless indicated otherwise.

1962Crésuz, Switzerland
1963Wolfsburg (nr Essen), Germany
1964Taizé, France
1965* Fribourg, Switzerland
1966Lugano, Switzerland (Foundation of UL)
1967Pamplona, Spain
1968Neustadt, Germany
1969* Turin, Italy
1970Amsterdam, Netherlands
1971* Essen, Germany
1972Strasbourg, France
1973Regional meetings: Kassel, Germany; Montserrat, Spain; Verona, Italy; Rio de Janeiro, Brazil; and Wood Hall (Leeds), England
1974* Strasbourg, France
1975[Failed joint project with World Council of Churches: Geneva, Switzerland]
1976Candia Canavese, Italy
1977Jambes (Gentinnes, nr Namur), Belgium (first proposal for UL Document I)
1978Luxembourg
1978* Strawberry Hill, United Kingdom
1979Candia Canavese, Italy
1980* Assisi, Italy (UL Document I launched)
1981St-Maurice, Switzerland
1982Walbourg (nr Strasbourg), France
1983Varese, Italy
1984Paderborn, Germany
1985La-Baume-lès-Aix (Aix-en-Provence), France
1986Capiago (Como), Italy [with excursion to Lugano, Switzerland]
1987Waterloo, Belgium
1988Montserrat, Spain
1989Worth, England
1990Altenberg, Germany
1991Innsbruck, Austria
1992Candia Canavese, Italy
1993Bovendonk, Netherlands (first stirrings of what would become UL Document II)
1994Rueil-Malmaison (Passy-Buzenval, Paris), France
1995Bari, Italy (formal proposal for UL Document II)
1996Stamford, Connecticut, USA
1997St-Maurice, Switzerland
1998Oscott (Birmingham), England
1999Kirchhundem, Germany
2000Soesterberg, Netherlands
2001Montréal, Canada
2002Valpré (Lyon), France (UL Document II agreed)
2003Gazzada (nr Varese), Italy (UL Document II published)
2004St Pölten, Austria
2005Worth, England
2006Bex (St-Maurice), Switzerland
2007Modra – Harmónia, Slovakia
2008Drongen (Ghent), Belgium
2009Gazzada (nr Varese), Italy
2010Kirchhundem, Germany
2011Kamień Śląski, Poland
2012St Walfroy, France
2013Worth, England
2014Loreto, Italy
2015Traunstein, Germany
2016Gazzada, Italy
2017Brno, Czech Republic
2018Rome, Italy
2019Ellwangen, Germany
2020Online
2021Paris, France (online)
2022Brno, Czech Republic (online)
2023Lyon, France
2024Maredsous, Belgium

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