The Zero KM Mile marker in the center of Madrid's Puerta del Sol - all roads in Spain are measured from this point! (and they haven't repaired the tile in the last 10 years!)

The Tio Pepe sign atop the Hotel Paris on the Puerta del Sol

The "Museum of Ham" - it's actually a chain of stores that sells all types of meats, but this is the original one.

Not sure what the building is, but we liked the Elephants! :)

The Metropolis building on Gran Via. Very old and very famous.

The Central Post Office (Correos)

The Neptune Fountain, near the Prado Museum

Puerta de Alcala - one of the oldest gates into the city. This great gateway was designed by Sabetini in 1769 to commemorate the arrival of Carlos III.