The world's record-breaking airports

By Lauren Said-Moorhouse, for CNNUpdated 15th August 2012
London Heathrow, the world's busiest airport in terms of international passengers, has just celebrated its busiest day ever, with 137,000 people departing from the airport on August 13.
But it's not the only airport in the world to boast impressive numbers. Here, we've enlisted the help of the world authority on superlative achievements -- Guinness World Records -- to compile a gallery of record-breaking airports from across the globe.