qualities long before he decided to sever his connection with the vessel as a form in 1964 and to make pure sculpture in glass. The Lancet went on to inspire future generations of artists, including architect Ian Simpson whose London skyscraper One Blackfriars was inspired by its shape. Finlandia The Finlandia line of "bark glass" vases produced by Iittala in 1964-1970 brought about another innovation, mass-produced household objects each of which was, in a way, exclusive. The collection was distinguished by the presence of thick glass with a rough surface that brought to mind snow and ice, replacing in one blow the smooth, thin, streamlined colored glass of the 1950s. Sarpaneva recalled:I found a heap of discarded wooden molds used for making polished glass and decided to make a different kind of glass with them. Each piece was slightly different in its shape and surface.Glass was poured or blown into the molds and allowed to remain long enough for the molds to burn, thereby roughening the surfaces. Each time the mold was blown into, the grain texture changed causing each object in the Finlandia series to be unique although mold-blown. The molds were gradually, and intentionally, destroyed through repeated contact with glass heated to 500 °C (932 F). The changing surface gave each piece a natural randomized "bark" effect created by the carbonized wood, which could not otherwise be convincingly created by an artist. Sculpture Pack Ice / Mirror of the Sea Sarpaneva made his and Finland's largest glass sculpture, Ahtojää ("Pack Ice," renamed from Jäävuori, "Iceberg"), for the Finnish pavilion at Expo 67 in Montreal in 1967. It was then bought by the City of Tampere and remained in storage until 1988 when it was installed in the entrance lobby of the KoskiKeskus shopping mall opened in downtown Tampere in March of that year. The 12 m (36 ft.) long and 6.4 m (21 ft.) wide triangle is suspended from the ceiling and filled with 488, up to 1 m (3.3 ft.) high, faceted and noduled glass turrets. Sarpaneva expanded his original concept by attaching Meren peili ("Mirror of the Sea") below Ahtojää, mirror panes interpreting the surface of the sea (the Baltic Sea is partly covered with ice around Finland in the winter, but ice-free in the summer), in order to reminisce on fluidity and the cycle of life, which also subsumed a Finnish take on the two