| Brooklyn Bottanical Garden, NYC |
1978 Gran Canaria, Spain
1986 Calgary, Banff and BC, Canada
1987 Calgary and Edmonton, Canada
1988 London, UK
1990 Missouri - Colorado - Miami, USA
1991 Missouri, USA
1992 Florida, Georgia, Tennessee, Missouri, USA
1994 Belgium - France - Italy - Greece - Vienna, Austria - Slovakia - Warsaw, Poland - Berlin - Germany
1996 Bergen, Norway
1997 Barcelona, Spain - Texas, USA - Calgary, Canada - Slovakia
1999 Milan & Venice, Italy - Nimes, Avignon & Arles, France
2000 New York City, USA - China - Berlin, Germany
2001 Thailand - Cambodia - Penang, Malaysia - Sumatra, Indonesia - Laos - China - Pakistan - India - Algarve, Portugal
2002 New York City, USA - Vienna, Austria - Finland - Thailand - Czech Republic
2003 Hungary - Brussels & Antwerp, Belgium - Haarlem, Brielle, Vaals, Amsterdam, Den Haag, Kinderdijk & Delft, Netherland - Aachen, Germany - New York City (2 times), Washington DC, USA - Nitra, Slovakia
2004 Battambang, Phnom Penh, Siem Reap, Angkor, Kompong Cham, Kompong Chhnang, Sen Monorom, BanLung, Pursat, Cambodia - Yangon, Inle Lake, Mandalay, Bagan, Myanmar - Melaka, Penang, Malaysia Koh Chang, Bangkok, Chiang Mai, Thailand - Groningen, Netherland |