Mauro Trejo, board member and one of the Presidio Museum's most knowledgeable docents, will lead you on a walk along the 2.5-mile Turquoise Trail through Downtown Tucson to see historic buildings and hear stories that make Tucson’s history special. Along the way, you will take a break at El Minuto Cafe for margaritas and cheese crips. Tour good for up to 15 people.