Camouflaged bunkers of the former artillery fort of the Swiss Army stand (foreground) in the town of Faulensee, Switzerland October 19, 2015. Artillery fort Faulensee was in military use from 1943 to 1993 and is now open to the public as a museum. With the threat of foreign invasion a thing of the past, thousands of military bunkers and fortresses in Switzerland have been put to commercial use, from hotels to data centres, museums to cheese factories. The Swiss army has sold most of these decommissioned strongholds, but about a thousand unused bunkers remain, many still disguised as houses and barns. REUTERS/Arnd Wiegmann PICTURE 9 OF 27 - SEARCH "SWISS BUNKER" FOR ALL IMAGES