Click on the photo for a better view
This is west tower of the KIO towers in Plaza Castilla. If you look carefully you can see the other's tower reflection (dark shadow) and lot of buildings reflected too. The yellow roof on the right is the Plaza Castilla bus station.
Esta es una de las Torres KIO en Plaza de Castilla. Si miras atentamente, verás la otra torre (mancha oscura) y muchas casitas reflejadas. El tejado amarillo pertenece al intercambiador de Plaza de Castilla.
PS. About the "give a break to your planet" day happened yesterday... If you want to check out how it was in Madrid take a look at this link (in spanish, sorry)
Listening to Meat Loaf Objects in the real view mirror may appear closer than they are (long title!)