The Museo Thyssen-Bornemisza is a must-visit museum for art enthusiasts. Located in the heart of Madrid, it houses an extensive collection of European art from the 13th to the 20th century. The museum offers free admission on Mondays from 12:00 PM to 4:00 PM, allowing visitors to explore its diverse collection of paintings, including works by Van Gogh, Monet, and Rembrandt.