Santiago is a university city, a UNESCO World Heritage Site, and the destination of an important pilgrimage route. It has an impressive cathedral where, if you stay for pilgrims mass, you may be lucky enough to see an enormous incense burner (botafumero), swung dangerously low over people's heads during the service.
Like most Spanish cities, the nightlife is good here and anyone who feels brave can do the Paris-Dakar bar crawl - having a drink in each bar between 'Paris' and 'Dakar'. Try the local white wine, especially from Rías Baixas region, which is excellent. In some bars I remember wine being served in saucers, which seems a little abstemious on reflection, but you can always go nuts afterwards with the Basque digestif 'Patxaran'. This is a rather too-easy-to-drink sloe and anise spirit - a headache is guaranteed.
Regarding the weather, rain wear is essential here and don't skimp on quality or you'll find you spend most of your trip drying off in cafes then getting drenched again. In fact, to keep out the kind of torrents you'll face anywhere on the north coast of Spain, I'd recommend waterproofs and an umbrella. Spanish people will tell you that they feel sorry for you living in a country like the UK where it rains all the time. If only they knew! England is a desert compared to Galicia and Asturias. Go anyway though, but be prepared!
Santiago de Compostela, Galicia, Spain. a good link with info and further links is en.wikipedia.org/wiki/Santiago_de_Compostela
Is this your business?
You can find out all about it either by Googling for more information or reading this website.
www.xacobeo.es/en