Visiting Southern Spain - places to see

Hi permies in Southern Spain,
On my way to Africa I am planning to visit Andalucia Mid or End of this November and I'd like to see interesting permaculture sites which can be reached by public transport or foot walks. I want to learn how permaculture is done in a dry climate intending to apply that knowledge to my garden in Gambia. I'd also be happy to find seeds of tropical food plants. I do prefer a warm environment for that time of the year.
Any recommendations?
I can help with gardening or other work, but can also pay for accommodation, all is negotiable.