http://www.google.com/intl/en/landing/prado/
Google recently launched the Prado layer in Google Earth, allowing students to explore highly detailed photographic images of 14 of the Prado Museum’s masterpieces. The Prado Museum in Madrid is one of Spain’s most visited destinations, and with the Google Earth layer, students can view and learn about the museum’s most famous paintings, such as The Maids of Honor (Las Meninas) or The Three Graces (Las Tres Gracias). Google Earth Prado layer also includes 3-D models, which allow students to fly around the Prado buildings to experience the museum as if they were actually there. Open Google Earth, check the 3D buildings layer on the bottom left panel, go to the Prado and access the masterpieces.