Auckland's City Rail Link opens today, and two of the artists whose work now fills the new underground stations joined Perlina for a guided walk-through. At Karanga-a-hape Station, Reuben Kirkwood designed a vaulted ceiling made from metal sections inspired by the pupurangi, a large snail that lives in the trees, alongside carved kauri lunar discs and a sun-and-moon installation tracking the tides. At Maungawhau Station in Mt Eden, Tessa Harris, who is Reuben's cousin, created a water wall installation shaped around the mountain, its triangle form representing strength, purity and the tupuna.