After months of strict secrecy, the replica town used in Christopher Nolan's historical biopic "Oppenheimer" is set for a tourist boom. In the real city of Los Alamos - an hour's drive from the set - officials have reported a leap in visitors since the billion-dollar film's release last year and, amid the Oscars buzz, the owners of Ghost Ranch, where the set was built, are planning to start running "Oppenheimer Tours".