I don't think there are any gas holders that are going to become that iconic but a lot of tourism focuses on interesting infrastructure like dam's, buildings, towers, walls, bridges, etc.
Beauty is the art of making something pleasing and desirable to humanity.
Engineering and architecture should aim to do both. When utilities are ugly they can depress the price of properties around them, making people less willing enable future needed projects. I mean, is your home a (subjectively) ugly gray box with no decoration. I mean the purpose of a house is to shelter you from the elements.
For the most part homes in the UK are designed to fit in with their surroundings not be beautiful. I don't find hundreds of identical red brick buildings particularly asthetically inspiring and decoration is usually kept to an absolute minimum by developers. What we end up with is endless estates that all look exactly the same in order to protect sensibilities. We need to accept some creativity and change.
Yeah, like this. http://www.choishine.com/port_projects/landsnet/landsnet.htm...
That's obviously bollocks - human beings aren't machines - they enjoy existing in an environment that they find beautiful. So, we should consider aesthetics when designing technology that is visible.
The more we fetishise heritage the less acceptable new structures and designs becomes that are "out of context". For example, a wind turbine should only need to generate power efficiently. It should not need to look good.