Pepe is a very interesting and fun guy! He knows a lot about many diverse topics (e.g. diving in Indonesia, choosing the best Madrid restaurants, etc.). His 'very comprehensive' tour of Madrid started with his meeting us in our hotel near the Palacio, then taking a quick subway ride to the eastern side of the city, so that when we walked back to our hotel, we would see the best sights in chronolocial order. For Roman ruins, to comparing the Habsburg kings, to El-Greco, to Franco's time, to the latest events ... we covered it all, in a 4 hour walk (over flat paths). Sounds like quite a hike, but he made it very interesting. Hey, if a 70+ year old couple can do it easily....