I've been in that bunker! Spent 3 days in the Normandy area in 2006, we stayed in Caen. We had a two day semi-private WWII tour of the area. It was just myself, two friends, an Australian guy, and our tour guide. Our guide was awesome, and she knew everything about the area, the battles, the equipment used, and she took us to all kinds of awesome spots throughout the region, many look similar to the one in this picture, and they were both on the coastline and scattered about the countryside as well. We stopped at this particular one for wine and cheese one day and hung out for a bit. I have some various pictures of that trip at home. Lots of pictures of us hanging out in bunkers, look outs, gun placements, sherman tanks, and of course Omaha and Utah beaches. If you are remotely interested in WWII and are ever in France it's definitely worth it. Hire a smaller guide so you get a more private tour (probably less expensive too), instead of the big mega-bus ones for old people.