Google Earth is a real gem (Mac/PC). Apart from its primary function of keeping me from getting anything done, it's also a great way to actually see places that you're reading about. I just picked up a copy of Heavenly Intrigue about the death/murder of Tycho Brahe. The first thing I see is a map of where the castle is in Denmark, and it was quick work to find where I believe it must've stood. [Read more…]