Bangkok is known for its shopping, and a rainy afternoon is the perfect time to explore some of the city's many malls. The Siam Paragon is one of the largest and most popular malls in Bangkok, with a wide range of shops, restaurants, and entertainment options. The CentralWorld mall is another great option, with over 500 stores and a variety of dining and entertainment options. For a more local experience, head to the Chatuchak Weekend Market, which is open on Fridays, Saturdays, and Sundays and offers a wide range of goods at bargain prices.