Where are we today, what has landed?

We are at the National Botanical Garden of Wales and it is not a spaceship, it is the Great Glasshouse. 

I have only been to this site once before and it left this image in my mind, something has landed and settled into the Carmarthen  landscape.

Of course, once inside one is overcome by the scents of the plants, the colours,  the birds and today the excited voices of two primary school groups on a learning day.