Question: 1 day in madrid what to do?
Answer: Prado Museum. As your minutes are precious here, pick out a few choice masterpieces (such as Velázquez's Las Meninas) and concentrate on your favorites. ... 
Botanical Gardens. ... 
Paseo del Prado. ... 
Congreso de Diputados. ... 
Ateneo de Madrid. ... 
Casa Museo de Lope de Vega. ... 
Take a Break — La Mallorquina Pastelería. ... 
Puerta del Sol.