Based on the former Spanish Royal Collection, the Prado is a beautiful old castle with more than a thousand fascinating works on display. One of the world's premier art galleries, the more than 7000 paintings held in the Museo del Prado’s collection are a penetrating look at the celebrated history of Spanish art. Prado offers free entrance from 6-8 weekdays, 5-7 on Sundays and holidays. This is often the busiest time and entrance to temporary exhibitions is not included.
The pre-bought tickets made a great difference- no waiting in line, we went right in .