While walking through famous Trafalgar Square, make your way to the southwest corner of the square. What appears to be a normal light fixture is in fact Britain’s smallest (and possibly most well-hidden) police station. Built in 1926, the station was designed Metropolitan Police to keep a watchful eye on possibly troublesome protestors. How, you may ask? A light fixture was hollowed out and narrow slits were installed, giving officers a prime view across the square. Should trouble arise, a phone was installed inside the station with a direct line to Scotland Yard. What’s more, the light fixture itself would blink if a call was made, alerting nearby officers. Don’t worry, you’re not under surveillance. The station is no longer in use and now serves as Britain’s most interesting broom closet.