The new Guggenheim Museum in the Port of Helsinki acts as a highly visible landmark for arriving ferries. Like an iceberg, the museum shimmers during the day, turning into a beacon at night. Its simple, iconographic form aims to evokethe essential Nordic character. The support structure consists of a rafter roof draped over an introverted body. The thick translucent roof functions as a slanted glass façade for the exhibition spaces. The central body houses a large event space, with thick walls containing small, artificially lit rooms for light-sensitive exhibits. The prismatic structure is conceived as the ultimate light machine, both inward and outward.