Heathrow cannot seriously be considered the worst airport in the world. It may be devoid of any decent shops or restaurants, but try Vienna Schwechat for bizarre organization; I've heard that it is similar at other Austrian Airports, but there is no passport control until the individual gates, resulting in huge, confused, tangled queues that make everyone late for the plane...

Then you have airports with literally nothing except a runway, such as Abu Simbel in southern Egypt; although I was not repulsed by the small airport, I find it difficult to believe that Heathrow, with all its facilities, can seriously be considered worse than a shack and a strip of tarmac.

If its the look and feel of the airport that matters to you, don't go to Tallinn; a concrete box home to the grumpiest and least friendly passport control staff I have ever met.

And then we have Atlanta Hartsfield-Jackson, an airport that proves that being the world's busiest is not something to boast about.

My personal favourite airports would probably have to be Albuquerque Sunport in New Mexico, and Beijing Capital; although both seemed eerily deserted considering their immense size.