The subtitle to Ruins to Ruins, From the Mayan Jungle to the Aztec Metropolis, defines the extent of the sites visited by Robert, a young naturalist, and Johnathan, a budding archeologist. A third subtitle might be Finding Wildlife at the Ancient Ruins. Examples include army ants and howler monkeys at Chich n Itza, orange-breasted falcon at Tikal, and king vulture at Yaxchilan. Their journey took them to numerous significant ruins, from Chich n Itza to Uxmal, Mayapan, Coba and Tulum, Calakmul, Tikal, Bonampak, Palenque, Monte Alban, Quiahiztlan, and Tenochtitlan. Along their route, they visited Catemaco and the Sierra de Tuxtla, climbed Popocatepetl, joined a marriage ceremony at Tula, and visited the amazing National Museum of Anthropology in Mexico City. They also encountered many folks along the way: Senior Aguilar and family at Valladolid; Maya, a Mexico historian at Tula de Allende; and Katrina, who becomes their guide to Tenochtitlan. At Tikal, Robert met Carol, the love of his life and who eventually became his wife.