The Macau Museum is a great place to spend a rainy afternoon. It is located in the Monte Fort, a historic fortification that was built by the Jesuits in the 17th century. The museum has a collection of artifacts and exhibits that showcase the history and culture of Macau. You can learn about the city's Portuguese heritage, its role as a trading port, and its unique blend of Chinese and Western influences. The museum also has a beautiful garden that you can explore, which is especially lovely on a rainy day.