Muskö Naval Base, Sweden: Cool Photos Give Short Tour

"Sweden's Underground Naval Base at Muskö"
City of Ember Underground

"When the world was at war there was only really one safe place and that was underground. That's why the world today is littered with underground military bases many of which are still...."

Not much text, but 18 graphics - mostly photos, plus Google maps.

The Muskö naval base looks like it's "right out of a Hollywood film." And, this post gives a pretty good quick tour of the place.