About us

Urso Chappell

Urso Chappell founded ExpoMuseum 1998, with the ultimate dream of seeing ExpoMuseum become a physical museum dedicated to the history of all world expositions - in much the same spirit as the Olympic Museum in Lausanne, Switzerland.

Ever since attending his first world's fair in 1982, Urso was fascinated by nearly every aspect of them. He continued to be inspired by the potential of future expos and their enormous capacity to educate and inspire the public to see beyond everyday life. Combining his interest in design, architecture, culture, history, internationalism and communication, the potential of world's fairs became a passion for Urso which eventually led to the creation of ExpoMuseum, the preeminent online world's fair source. Over the years, he attended eleven international expositions, wrote for various publications, consulted on Expo bids, and worked with Milan's Expo 2015 to create the Expo 2015+100 Archive.


Sadly, in December 2020, Urso Chappell passed away. A group of friends and colleagues took over ExpoMuseum to keep his legacy alive. 

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César Corona


César Corona is a specialist on public diplomacy and World Expos.

He has worked at Expos 1998 Lisbon, 2000 Hannover, 2010 Shanghai, 2012 Yeosu, and 2015 Milan, for the National Section of Mexico, the University of Southern California (USC), and the Bureau International des Expositions (BIE).

He holds a BA in International Relations (UNAM) and a MA in Public Diplomacy (USC).

His hobbies include photography, drumming, and languages.

He resides in Los Angeles, USA.

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Christine J Hsieh


Christine Hsieh is a World Expo enthusiast. She first learned about World Expos when she was visiting her family and saw Shanghai getting ready for their Expo. Over the next few years, she received multiple research grants from her university to attend both Expo 2010 Shanghai and Expo 2012 Yeosu. Most recently, she attended Milan Expo 2015. She loves to travel and even when she's visiting other cities, one of the first things she looks for is traces of past World's Fairs.

Aside from World Expos, she also loves coffee, cooking (plant-based), and photography.

She resides in New York, USA.

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Laurent A. LeMog


Graphic arts designer for more than 30 years, Laurent Antoine LeMog has specialized since 2005 in the World Expo history field.

He uses his vast World Expo collection to create 3D reconstruction projects, historical research and write articles in the Expo domain.

He works mainly for renowned institutions, museums, but also in the context of future Expo bids, with organizations, or pavilions of participating nations.

He resides in France

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John McGregor


John McGregor is founder and webmaster of celebrate88.com, a virtual encyclopedia to Expo 88 Brisbane, where he first worked as a guide.

Later he worked at Expos '92 Seville and '93 Taejon. He represented Expo '88 as an observer for Brisbane City Council at the BIE-coordinated Assembly of Expo Cities & Regions at Seville 2002, Expo 2010 Shanghai; and Expo 2012 Yeosu.


His hobbies include languages, travel, and following World Expos news.


He resides in the Gold Coast in Queensland, Australia.