On a rainy afternoon in Downtown Madrid, one of the best things to do is to visit the Prado Museum. This world-renowned museum is home to an extensive collection of European art, including masterpieces by artists such as Velázquez, Goya, and El Greco. Spend your time exploring the museum's galleries, admiring the stunning paintings, sculptures, and other works of art. The Prado Museum offers a fascinating insight into the history of art and is a perfect way to spend a rainy afternoon in Madrid.