In this vacation, I have not spent too much time for sightseeing in Amsterdam. I have stayed in Schiphol Airport for three time to spot airplanes. When I stayed in town, I met with pro-Palestine protestors to fight for their rights. In the second day, I experienced the sudden change of visibility from 20 metres to over 20 km. Besides, I met a nice railway staff to tell me the way of train interchange from Amsterdam to The Hague. Those were the things gave me an unforgettable experience.