YOW is the designation for the Ottawa airport. Having that for an airport in a national capital is too perfect.
So, the challenge, dear readers, is this: are there any contenders among the world's airport codes for suitable match? Or at least amusing? Winner gets my undying admiration.
Update: so far, the suggestions have been ironies (Singapore and SIN, Helsinki and HEL) and amusing (BAD, SUK), but appropriate?