Visit one of the oldest cities in the world san juan founded by the spanish in 1521 adget to know old san juans history and sights on this walking tour of the city with an expert local guide you will discover the neighborhoods and learn about the powerful colonial influence startingfrom the historical hotel el conventoin old san juan your local guide will take you on a 25 hour walking tour along the paseo de la princesa princess promenade to the la fortaleza which is currently the