Thanks for the comments on the pics I posted of the cacti from the arid house.
Here are a few more pics. They have a magnificent collection of glasshouses - Winters being pretty hard in this bit of Germany. Unfortunately, some were off limits this time as they are extending some of the main tropical houses - so I wasn't able to get into 2 of my favourites, the tropical waterlily house and the Begonia house.
But here are a few other pics anyway...
I'll put a few more in a separate post
Pete