Do some people-watching at Plaza Red de San Luis. If its paved paths could talk, this historic square would have some enthralling tales to tell.
You'll have no end of sightseeing choices when visiting Madrid Centro. Plaza Red de San Luis is a good place to start here, but there are plenty of other fine spots to consider. Plaza Mayor, Prado Museum, and Santiago Bernabéu Stadium are near the public square and will round out your day nicely.