The airport with most international connections is Madrid Adolfo Suarez. This airport offers plenty of options to most locations.
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WHAT TO DO IN SALAMANCA
A LITTLE HISTORY
Salamanca lies by the Tormes river on a plateau and is considered to be one of the most spectacular Renaissance cities in Europe. The buildings are constructed of sandstone mined from the nearby Villamayor quarry, and, as the sun begins to set, they glow gold, orange and pink. It is this radiant quality of the stones that has given Salamanca the nickname La Dorada, the golden city. [from Wikitravel]