The pieces which make up the exhibition are being shipped across the Atlantic
Bristol's City Museum and Art Gallery pulled off a "secret" Banksy show in 2009 but this summer's big exhibition has been delayed by mother nature.
Art from the New World was due to open on 1 May 2010 but disruption from the Icelandic volcanic ash cloud has meant postponing the show for two weeks.
Curator Jan Corey Helford has had to ship the exhibits to Bristol instead of flying them across the Atlantic.
The as-yet unseen collection will now be on show from Saturday, 15 May.
"We have shipments coming from all over the US - Los Angeles, Philadelphia, New York, Miami - with sculptures, huge paintings, costumes that require their own five-foot wide boxes and 16ft-tall air balloons," said Jan Corey Helford, who is also the owner of the Corey Helford Gallery in Los Angeles.
"When all is said and done, they'll arrive in about the same time it took a vessel to travel back to England from the original New World.
"But they will arrive. We simply forgot to prepare for a volcano."
The closing date for the exhibition remains Sunday, 22 August.