What is going on here??

What is going on here??

Observation - What is going on here?? - UK and Ireland. Description: Interested to know what is happing here, from a distant it looks like a Tam o' Shanter! ID would be nice but why the structure on top would be better

Interested to know what is happing here, from a distant it looks like a Tam o' Shanter!
ID would be nice but why the structure on top would be better