The tundra biome is found in the northernmost regions of the world, specifically in the Arctic and some high mountain ranges.

Here's a breakdown:

* Arctic Tundra: This type is found in the Arctic Circle, covering most of Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia. It's characterized by permafrost (permanently frozen ground), low temperatures, and short growing seasons.

* Alpine Tundra: This type occurs in mountainous regions around the world, above the tree line. Though they're not near the Arctic, they share similar conditions, like low temperatures, strong winds, and limited growing seasons.

Let me know if you'd like to know more about the tundra!