Following a spine of snow-covered volcanic peaks, this national park provides access to some of the most stunning stretches of the Colombian Andes. Its varied altitude range encompasses everything from humid cloud forests and páramo to glaciers on the highest peaks.
Thirty-seven rivers are born here, providing water to 3.5 million people in four departments. The glaciers in the park have been receding, however, and research is underway to measure the impact on the environment.
The best months to see snow in Los Nevados are October and November and from March to May. Outside of those times, you're more likely to get the dry, windy conditions favorable to trekking and clear views.