Deserts!

A region with minimal precipitation, less than 250 mm per annum. Approximately measuring over earth around 1/3rd part of the land over the earth is covered with the desert. Differentiating in the type of deserts based on their geographical scenario:

1. Polar Desert

2. Subtropical Desert

3. Cold Winter Desert

4. Cool Coastal Desert

Now heading on giving an answer to your query… The Largest Desert on Earth is in the Polar Areas.

Antarctic Polar Desert spreads over the continent of Antarctica and is about the size of about 5.5 million square miles.

Talking about the second largest desert it spreads across the parts of Canada, Iceland, Sweden, Russia, Alaska, Greenland, Norway, and Finland have the surface area of 5.4 million square miles, is the Arctic Polar Desert.

And the beauty lies in the steps of Nature!