[3] In 2005, he created a giant bird for the 2005 Crossing Border Festival, where it was perched atop The Hague's City Hall.

[4] His best-known work, Rubber Duck, made its debut in 2007 in Saint-Nazaire, France, and has since appeared in many cities around the world.

[5] In 2014, he introduced HippopoThames on the River Thames in London, and Moon Rabbit in Taiwan, ahead of a land-art festival taking place in Taoyuan.

Hofman's sculptures are temporary—even the Rubber Duck, which makes appearances in cities around the world, is created anew locally.

[8] He canceled an appearance in Keelung, Taiwan, to protest the fact that the organizers had turned the sculpture into a "commercial circus".