Near the main plaza are two museums: the William Spratling Museum, which contains silver and archeological pieces from Spratling's personal collection, and the Museum of Viceregal Art. The Museum of Viceregal Art is located in the "Humboldt House", named so because German writer Alexander Von Humboldt spent a night here in 1803. This house was restored in 1991 to become the Museum of Viceregal Art and contains colonial period art and artifacts, some of which belonged to José de la Borda.