The turquoise glacial lakes of the Canadian Rockies — Moraine Lake beneath the Valley of the Ten Peaks and nearby Lake Louise — where glacier-ground rock flour turns the water an electric blue-green beneath snow-capped mountains.
Often called the cleanest lake in the Philippines — a jewel-clear brackish lake cradled by limestone cliffs on Coron Island, reached by a short climb over a saddle with one of the country's most photographed viewpoints.
A serene highland lake wreathed in morning mist, feeding a chain of seven waterfalls through the mountains — the ancestral home of the T'boli people and one of Mindanao's most soulful landscapes.