Inspiration from The History Channel

The History Channel has some really great programs that you can watch online and mine for inspiration.  Amongst my favorites is Cities of the Underworld which is a program exploring everything from ancient lost cities to decommissioned Cold War era Soviet bunkers.   Aside from the videos of the program itself, you can find an image gallery and a web videocast (Naked Underground) which are simply great for coming up with ideas for adventures, getting a feel for what things looked like, or doing some background research for a historical game.