My father (structural engineer Matthys Levy) have been exchanging emails recently of unusual structures. The last one he sent is going to be hard to top -- literally. Singapore SkyPark is described as follows: "Stretching longer than the Eiffel tower laid down or four and a half A380 Jumbo Jets, with an impressive 12,400 square meters of space, the Sands SkyPark can host up to 3900 people. The gravity-defying cantilever is one of the largest of its kind in the world. From this privileged observation deck, hundreds of visitors at a time can feast their eyes on the unforgettable panorama view of Singapore"