Stuttgart Planetary looks smaller than it is
The buildings of large thermal power stations look also often much smaller as they are. This comes from the fact, that these buildings are in most cases not surrounded by buildings with well-known height and are often seen from a large distance.
Generally tall structures not surrounded by others are always estamited lower. Take some pictures of radio masts and towers whose height you know and let someone estimate their height. The results are estonishing!
Tall pylons of powerline crossings of rivers and straits look often also not as tall as they are. This results in the circumstance that they are of same design as lower pylons, only just larger. How tall would you think is this pylon?
It is 346.5 metres tall ( taller than Eiffel Tower) and belongs to Yangtze River Powerline Crossing Jiangyin