I'm soon going on a holiday to the Ardennes forest in Belgium, so what better to pick up than 'Ardennes 1944: The Battle of the Bulge' by Antony Beevor? This should for sure make me see the various towns over there in a different light.
Before this, I read 'A Spy Among Friends' by Ben Macintyre, an incredible read about Kim Philby, a Russiandouble agent in MI6 during the Cold War. The amount of intrigue and real-life spying described in that book is incredible.