My pick
My tip“Book online; set aside 2–3 hours and focus on the main halls. Entry is free for the last two hours of the day (long queue). Photography is not allowed.”
One of the greatest art museums in the world, with masterpieces by Velázquez (“Las Meninas”), Goya, El Greco, Bosch, Rubens and Titian, showing the taste of Spain's kings across three centuries.
Address
Paseo del Prado, s/n