On Tuesday, March 24, 1579, a Spanish magistrate arrived at the lakeshore. Acting on an order from the viceroy, he set out in a canoe for the small island community of Santa María Magdalena Michcalco, located near the great causeway dividing Lakes Xochimilco and Chalco. The short journey took him from the deeper pool at the dock facilities into a maze of narrow canals. The waterways traversed dozens of rectangular artificial gardens that rose above the lake’s shallow waters. Local, indigenous farmers cultivated these horticultural plots all year round, and if not preparing maize for one of their half dozen annual harvests, they would have been tending to their crops of chiles, squash, tomatoes, and other vegetables. Stretching into the distance with the many gardens were water willows whose root systems, partially visible from the canoe, held together the edges of the aquatic gardens.