It has eighteen legs; each leg has eight socks and each sock contains eight kilos of sand…. In 2004 the Brazilian artist Ernesto Neto made a sculpture for Museum Boijmans Van Beuningen in Rotterdam. Célula Nave was designed especially for the central modernistic space and Neto wrote down instructions how to construct the piece. After its first exposure, the work was bought for the museum’s collection and stored away in two suitcases. Five years later, in May 2009, the suitcases are taken from the depot for the exhibition Brazil Contemporary. The museum’s technical staff is challenged: how to get the work at its feet? Ernesto Neto himself explains his work.