Subway Entrance, Warner Brothers Studios, Burbank

Don't have a hole already dug in the ground but have to include a subway entrance in a scene?  Not to worry, build the above ground structure only, just remember not to shoot it from the point of view seen here in order to sustain the illusion of a real subway entrance.  Hot set signs are posted in areas where scenes have been prepared for active shooting and nothing must be touched until the film crew is finished with it.