General Discussion & Chat: Interesting structures... in your garden?, 1 by cinemike

cinemike wrote:
I was wondering what man-made structures that fellow gardeners have in their garden.
The appended picture is of a reinforced concrete WWII air raid shelter that was supposed to protect the occupants of my house from the Blitz.
The sub-text is that during WWII, my house was owned and occupied by Sir Ian Wallace, who was a major figure in the ruling Ulster Unionist Party in Northern Ireland. He later became Chairman of the Party and Lord Mayor of Belfast, in the 1950s.
Inside the shelter, there is enough space for two or three people to sleep. However, it is sunken and below the water table, so it tends to fill with rain water. There is a, still mainly functioning hand-pump for removing the water...

(The detritus on the top is mainly my growing-on pots of this year's seedlings...)