• 'Town planning in the Dutch East Indies and Indonesia', lecture University of Technology, Bandung (2010, November 29)
• 'New times, new needs. Town planning in the Dutch East Indies and Indonesia (1905-1950)', paper International Seminar ‘Transformasi morfologi dalam ruang perkotaan’, Semarang (2010, November 20)
• 'Designing the Town. Town planning in the Dutch East Indies (1905-1950)’, lecture University of 10 November, Surabaya (2010, March 18)
• 'Dutch Design in the Indische Archipelago’, Royal Tropical Institute, Amsterdam (2009, September 24)
• 'Complicated, challenging and exciting. Rehabilitating colonial built heritage in Indonesia', paper International Conference on East Asian Architectural Culture, Tainan (2009, April 10-13)
• 'De herontdekking van de Indische stad' ['The rediscovery of the Dutch Indian town'], lecture Rijksuniversiteit Groningen (2008, May 19)
• 'Town Planning as Central Problem', paper International Workshop 'The decolonisation of the Indonesian city (1930-1960) in (Asian and African) comparative perspective', Leiden (2006, April 26-28)
• 'Planning is Politics. Development and Preservation of Colonial Architecture and Town Planning in Bandung, Indonesia', paper International Conference 'Heritage at Risk. Preservation of 20th Century Architecture and World Heritage', Moscow (2006, April 17-20)
• 'Professors from Kentucky. The Americanization of Indonesian Planning after 1956', paper International Conference ‘The Americanization of Post-War Architecture’, Toronto (2005, December 1-3)
• 'Koloniaal gebouwd erfgoed in Indonesië' ['Colonial Built Heritage in Indonesia'], lecture Universiteit Gent, Gent (2005, November 10)
• 'Positioning Colonial Built Heritage. The Dutch East Indies: A Case-Study', paper International Conference 'Le patrimoine architectural des empires coloniaux Européens', Paris (2005, September 7-9)
• 'Preservation Theory and Practice. Examples from Amsterdam', lecture International Design Workshop 'Sustainable Interventions', Jakarta (2005, July 4-15)
• 'Koloniaal gebouw erfgoed. Lust of last?' ['Colonial Built Heritage. Asset or Drawback?'], lecture Vrije Universiteit, Amsterdam (2005, March 4)
• 'Facilitating Studies. ICOMOS Shared Built Heritage Student Help Desk', lecture International Symposium 'Dutch Involvement in the Conservation of Cultural Heritage Overseas', Delft (2004, November 25-26)
• 'Yours or Mine? Architectural Heritage in Indonesia', paper International Seminar Safeguarding and Revitalising Local Heritage', Shanghai (2004, October 28-30)
• 'Expanding Grounds. The Roots of Spatial Planning in Indonesia', paper International Conference 'Urban History in Indonesia in the Era of Transition (1900-1970)', Surabaya 2004, August 22-25)
• 'The Trouble with Conservation', lecture Bandung Heritage Society, Bandung (2004, August 31)
• 'Does a study in art-history provide more than good conversation over dinner?', paper Regional Seminar 'Writing and Teaching History of Architecture', Universitas Tarumanegara, Jakarta (2000, November 20)
• 'Geschiedenis en stedenbouwkundige ontwikkeling van Amsterdam 1200-1995' ['The History and Urban Development of Amsterdam'], lecture Vrije Universiteit, Amsterdam (1996 & 1997, August)

Other lectures on Indische architecture, planning and heritage:
Architectuurcentrum Amsterdam (ARCAM);
Etnografische Vereniging, Delft;
Senioren Academie (Vrije Universiteit, Rijksuniversiteit Groningen);
Architectuurcentrum Amsterdam (ARCAM);
HOVO/Vrije Universiteit, Amsterdam;
Kunsthistorisch Centrum, Zaandam;
Koninklijke Nederlandse Oudheidkundige Bond, Delft;
Koninklijk Oudheidkundig Genootschap, Amsterdam;
Kumpulan Bronbeek/Werkgroep Indische Gebouwd Erfgoed Apeldoorn;
Kunsthistorisch Centrum, Zaandam;
Pasar Malam Besar, The Hague;
Rotary Club Oost, Amsterdam;
Royal Tropical Institute, Amsterdam;
Vrije Academie, Arnhem.