ALASKA : BLUE ICE @ GLACIER BAY 

Glacier Bay Basin in Southeastern Alaska, USA encompasses the Glacier Bay and surrounding mountains and glaciers, which was first proclaimed a US National Monument on February 25, 1925. This is the largest UNESCO protected biosphere in the world.
The Blue Ice occurs when snow falls on a glacier, is compressed, and becomes part of the glacier. During compression, air bubbles are squeezed out, so ice crystals enlarge. This enlargement is responsible for the ice’s blue color.