St. Nicholas Church (Malá Strana)

This guide to St. Nicholas Church in Mala Strana, Prague uncovers a Cold War secret hidden in its Baroque bell tower: a spy post codenamed Kajka, staffed from 1952 to 1989 by retired secret policemen who nicknamed their own post the old men's machine. Their job was watching the foreign embassies across the square below, working around-the-clock shifts colleagues joked were a reward. Tourists below wandered the painted dome with no idea anyone was watching from the belfry.