At the Amsterdam Airport in December 2011. I was on my way home from Athens and wasn't able to make it onto a direct flight to New York so I caught a flight here and spent the night at the airport. National Flag Coat of Arms Formal Name : Kingdom of the Netherlands Independence : January 30, 1648 Capital : Amsterdam Area : 16,039 sq mi Population : 16,847,007 Currency : Euro Languages : Dutch National Anthem : "Het Wilhelmus"