I've only been there once but California Cactus Center in Pasadena was amazing (
http://www.cactuscenter.com/) -- and they had locally made very cool unusual ceramic pots just the right size for miniature succulents. So sad I had to give my collection away when I moved.
If you happen to find yourself in Vanrhynsdorp, Northern Cape, South Africa, don't miss the Kokerboom Kwekery -- (
http://www.kokerboom.co.za/) of course pretty much every where you look in the Northern Cape you see amazing wild succulents as well.
