Casa-Museu Medeiros e Almeida

Housed in a stunning early-19th-century mansion, this little-known museum presents António Medeiros e Almeida's exquisite fine- and decorative-arts collection. Highlights include Han ceramics and Ming- and Qing-dynasty porcelain, Thomas Gainsborough paintings, a 300-strong stockpile of watches and clocks (one of the best private collections in Europe), and a dinner service that once belonged to Napoléon Bonaparte.