Houseleek flower on my stone wall...

I had to rebuild this wall some years ago , our neighbouring farmer stopped by frequently and gave me advice. It was great fun, just like doing a stone jigsaw puzzle. Then I took a housleek off another wall and planted it in varioos nooks and crannies. It has now spread out well, but this is the first time it has flowered. I love the patterns and the textures within it and hope it flowers again...
I googled houseleek and found a really interesting site /www.plant-lore.com/231/houseleek/

Best large