Berlin’s status as a divided city during the post-war period has led to a number of peculiarities. Many public facilities and cultural institutions come in twos or more. Thus, Berlin boasts more zoos, opera houses, large squares etc. than many other cities of similar size – and more airports, too! Since construction started on the new international Berlin Brandenburg Airport, these have recently been in the news quite a lot. We think it’s time for a round-up of historic facts and recent events – everything you need to know about Berlin’s not one, not two, but four airports.