Hidden rooms and secret passageways might sound like something out of a mystery novel. But some architectural details really can expose secret spaces behind walls or beneath floors. Isfira Jensen, CEO ...

Hiding behind secret doors and bookshelves, using puzzles and passwords to help patrons find the entrance, or even cloistering underneath the city itself. Hidden down long, dark hallways and ...

During Prohibition, speakeasies were illicit bars often hidden in basements, behind unmarked doors, or in back rooms. Patrons had to “speak easy” — that is, quietly — to avoid drawing attention from ...

Ever dreamed of having the ultimate hidden base? In this video, I’ll show you step-by-step how I built a secret underground fortress packed with clever traps, hidden rooms, and state-of-the-art ...

FRENCHMAN FLAT, Nev. — In the middle of a dry lakebed northwest of Las Vegas sits a lone section of a bridge, its steel girders bent like spaghetti. Nearby are other oddities — a massive bank vault ...