Lets go for travel...........
Eiffel Tower Designed and constructed for the 1889 Exposition Universelle (the World's Fair), the Eiffel Tower was always meant to be a temporary structure, but it skirted demolition talks twice. The first time, at the beginning of the 1900s, the tower was kept around because of its transmission talents. Gustav Eiffel, chief architect of the Eiffel Tower, had a variety of scientific experiments tested on the tower with the hope that any discoveries would help prolong its lifespan. One of these included a wireless transmissions test, which the tower passed with flying colors. During World War I, the Eiffel Tower's transmission capabilities enabled it to intercept communications from enemies as well as relay intel to troops on the ground. The second time the Eiffel Tower was almost destroyed was during the German occupation of France during World War II. Hitler planned to get rid of the tower, but never ended up going through with his plan