Artists Chris Treggiari (L) and Peter Foucaulton (R) work on their &#39;Ghost Ship&#39; art installation at the Oakland Museum of California on September 21, 2017 in Oakland, California. Local artists Chris Treggiari and Peter Foucaulton are building a memorial to honor their colleague Alex Ghassan and the dozens of people who died in the 2016 &#39;Ghost Ship&#39; warehouse fire. The installation will be part of the Oakland Museum of California&#39;s 23rd annual Dias de Los Muertos (Days of the Dead) Exhibition that runs from October 18, 2017 through January 14, 2018.