Royal Palace of Madrid, built with granite from the Sierra de Guadarrama.
Credit
D. M. Freire-Lista/IGEO (CSIC-UCM)
Usage Restrictions
None
License
Licensed content
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.