Tora! Tora! Tora!
Warning: only for those truly obsessed with Hawaii. Click here for an awesome Landsat 7 satellite photo + topographic map composite image of Oahu. (From the National Air and Space Museum's website.) That's Pearl Harbor you see there. See the little mouth of the harbor? Bridging it would be really helpful for commuters but the Navy won't allow it. Okinawa has a similar situation, where the military won't allow tunnels to be built underneath their sprawling bases (for good reason). To get from one side to the other, you have to drive all the way around. Really screws up traffic.
I really have a thing for aerial photos and maps. Could be a god fetish.