The Curaçao Museum is housed in a 19th-century former military hospital at the edge of Otrobanda. The permanent collection covers the island's history from pre-Columbian Arawak settlement through the Dutch colonial period to the modern era, with particular attention to the island's role in Caribbean trade. There is also a collection of traditional Curaçaoan furniture and household objects — the domestic side of the colonial economy, which rarely gets much attention.
The building itself is worth seeing: a long, low, yellow structure with deep verandas on all sides, set in a courtyard with mature trees. The museum is smaller and quieter than it sounds, which is either a recommendation or a warning depending on your taste. Go early in the morning when the light is good.