Visitors can start at the 9/11 Memorial on the site of the World Trade Centre, then stroll up the hill for a picture with one of the hundreds of protesters.

If you think you can't wear such shoes in your everyday life, just buy some model as a souvenir from Holland. They will surely remain when your souvenir No. 1 - tulips, will fade.

Many colleagues of the observatory came to the farewell ceremony to give souvenirs and take photos with them for commemoration.