A 178-square-kilometer glacial lake in the Mackenzie Basin, whose neon-cyan waters reflect the snow-capped pyramid of Mount Cook under the clearest night skies in the Southern Hemisphere.
November through March for long daylight hours, lupin wildflowers along the roadsides, and the highest chance of cloud-free views of Mount Cook's summit.
Fresh sashimi-grade king salmon from the Mt Cook Alpine Salmon shop at the southern lake outlet, raised in cold glacier-fed canal currents.
Base in nearby Twizel (10 minutes south) for motels and holiday cottages, or push up Highway 80 to Mount Cook Village to stay right under the peaks.
Stop at the southern viewing area or Peter's Lookout in the early morning; afternoon winds frequently kick up whitecaps that mute the lake's glass-like reflection of Mount Cook.
Read more in Lake Pukaki Travel Guide: Glacier Waters Beneath Mount Cook, New Zealand and New Zealand: The Southern Alps & Fiordland.