While it may not be the most conceptual public art installation of all time, a six-story-tall traveling rubber duckie is causing a frenzy along the banks of Hong Kong’s Victoria Harbour.

The massive bath toy, created by the Netherlands’s Florentijn Hofman, was first pulled into town on May 2 by tug boat. And it has already created a rubber duck craze in the city, with many street vendors selling armfuls rubber duckies both big and small. Hofman told CNN that he thinks his piece’s success has something to do with nostalgia. "I see it as an adult thing. It makes you feel young again. It refers to your childhood when there was no stress or economic pressure, no worry about having to pay the rent," he said.

This is not the first of Hofman’s installations to reference childhood iconography. He’s previously staged a giant floppy rabbit at Sweden’s 2011 Open Art Biennale and a suspended pig with Mickie Mouse ears in Strasbourg.

Since launching in 2008, the rubber duck project has traveled to Osaka, Sydney, Sao Paolo, and Amsterdam. It will remain in Hong Kong until June 9, before moving on to a secret location in the United States—once which will be announced only a week prior to launch time.