Year after year, the Casa de las Muertes remains one of Salamanca’s most intriguing spots—probably because it strikes the right balance between history and legend. Built around 1500, though the exact date is still debated, this house was commissioned by Archbishop Alonso Fonseca. Its most distinctive feature is its four small stone skulls carved beneath the two lower windows. They’re easy to miss, but they’ve sparked centuries of speculation. According to legend, they mark the site of a gruesome tale. The story goes that a knight named Don Diego returned from a hunting trip to discover his beloved wife, Doña Mencía, in the arms of not one but three lovers. Feigning ignorance, he waited until all three returned—then killed them, one by one, in duels. Though mortally wounded in the last fight, he still managed to strangle his wife with his final breath. The next morning, neighbors found all four bodies lying in a pool of blood, and the name “House of the Dead” was born. Sounds like pure fiction, right? Maybe—but interestingly, there was a real murder here in 1835. A young woman, who had recently dismissed her servants, was found dead in the well in the courtyard. That real tragedy only added to the mystery surrounding the house. Left abandoned for decades, the Casa de las Muertes is lived in—but its chilling reputation remains.