In January of 1990, demonstrators stormed the headquarters of East Germany's secret police, the Stasi. Breaking into the building, they recovered reams of documents detailing the agency's extraordinary surveillance of citizens, though many had already been frantically shredded by Stasi officials. The new government declared that the sacked Stasi headquarters should be renovated as a memorial, and the center now known as the Stasi museum opened its doors not long after German reunification. In a fascinating photo essay, programmer Egor Egorov captures the spy technology preserved in the museum, from camera-filled watering cans to hastily smashed hidden microphones — all meant to be used alongside the Stasi's meticulous disguises. A few of the many photographs have been reproduced below, all courtesy of Egorov.