The Yarra Valley is a well-respected Australian wine region which occupies the eastern half of the Port Phillip viticultural zone in the diminutive state of Victoria. One of Australia’s oldest and most celebrated wine regions, the earliest Yarra Valley vineyards were planted in 1838. The climate here is amongst the coolest of any Australian wine region, partly due to elevation—which reaches 500masl—but mostly due to the hilly topography, which creates shadows, shelter and heat sink.