Prompt
"Generate a realistic image of the exterior of the Fort Knox Bullion Depository, a large, secure vault facility located in Fort Knox, Kentucky, United States. The building should be made of granite, concrete, and steel, with a bomb-resistant roof and surrounded by a high wall, with armed guards and electronic security systems in place. The image should convey a sense of security and wealth, with the facility's imposing structure and robust defenses prominently featured."