Aerial photos snapped by camera-carrying pigeons, shoes embedded with a transmitter to spy on U.S. diplomats, and eyeglasses equipped with a lethal cyanide dose will be among 1,100 espionage artifacts displayed at the new International Spy Museum.

Still under construction, the museum is scheduled to open July 19 in Washington D.C., the world capital of espionage, and just a stone’s throw from FBI headquarters, where Robert Hanssen worked before he was uncovered as a mole who sold U.S. secrets to Soviets.