The Cristal Palace in the park of El Retiro in Madrid. It is a conservatory made mostly of glass and iron. It is a nice visit to do if you are in Madrid.

7 World’s Continents Photo Challenge - European Thursday week #121
The Cristal Palace in the park of El Retiro in Madrid. It is a conservatory made mostly of glass and iron. It is a nice visit to do if you are in Madrid.