Ernesto knows art!! We spent 2 hours in the Prado and he taught me so much about the paintings that we viewed. He guided us through different art periods in a way that let us see changes and also explore a lot of the museum in a short time. One can spend days there. Ernesto is well traveled, friendly, easy to talk with, and wants to make the tour fun and interesting. I highly recommend any tour with him, and especially this one.