The Monarchy own all of the swans in England.
The Eiffel Tower in France does not retain the same size all year round. In fact, in summer, the tower expands a few centimeters. This is a natural physical phenomenon called thermal expansion caused by the heat. This expansion also causes the tower to tilt slightly away from the sun. The sun only hits one of the four sides causing an imbalance, with three sides remaining stable However, all of this expansion is lost during the winter as the atmosphere is cooler.