The Heraion of Olympia (c. 600 BCE) exemplifies the transition from wood to stone construction. This building, initially constructed entirely of wood and mudbrick, had its wooden columns gradually replaced with stone ones over time. Like a museum of Doric columns and Doric capitals, it contains examples of all chronological phases, up to the Roman period. One of the columns in the opisthodomos remained wooden at least until the 2nd century AD, when Pausanias described it. This 6 × 16 column temple already called for a solution to the Doric corner conflict. It was achieved through a reduction of the corner intercolumniations the so-called corner contraction. The Heraion is most advanced in regards to the relationship between naos and peristasis, as it uses the solution that became canonical decades later, a linear axis running along the external faces of the outer naos walls and through the central axis of the associated columns. Its differentiation between wider intercolumnia on the narrow sides and narrower ones on the long sides was also an influential feature, as was the positioning of the columns within the naos, corresponding with those on the outside, a feature not repeated until the construction of the temple at Bassae 150 years later.