I have stood at the very base of Wind Turbines multiple times. They are awesome, in the traditional sense of the word. A giant tower with an engineering marvel of a prop that slowly turns, nearly noiselessly sapping energy from nation sized air masses that continuously convect due to the immense amount of light and heat energy pouring into our atmosphere 24/7. They look futuristic, and yet at the same time so simple and elegant. Fields of fans sucking energy out of the wind currents.

I would love to live about five miles away (infrasound might be a real issue for some people) from a hundred acre installation of them. Here in Maine we have capped a few small mountains with them up north and it's very aesthetic.

Pumpjacks are also pretty cool though I've never seen one in person. Their simple design and brutal metal structure are pretty in their own way. Flares look pretty neat too.

..... Alright maybe infrastructure is just cool to me