Eduardo Luis Pareyón Moreno (December 2, 1921 – March 9, 2000) was a Mexican architect and archaeologist. He was a pioneer researcher in several aspects of modern Mexican archaeology. He was born (and died) in Azcapotzalco, Federal District, to a family renowned for its contributions to the humanities and sciences. Education He studied architecture at the National Autonomous University of Mexico and started a brilliant career assisting architect Mario Pani during projects as the new National Conservatory of Music (Mexico) and the Latinoamericana Tower, both in Mexico City. However, he soon get interested with archaeologic excavations, due to the rich history of the soil in many areas where he was working as architect. Another element that influenced his first studies as archaeologist, was that during his childhood he spent many days exploring the old ruins of Teotihuacan, years before its reconstruction. Actually, Pareyón Moreno's father, colonel Eduardo Pareyón Azpeitia, was a friend of Manuel Gamio, whose work and personality had an impact during his first cultural development. He returned to study at the National School of Anthropology, where he completed his master dissertation "Excavations at the archaeologic zone of Cerro del Tepalcate" (1961). Career From 1955 to 1959 was assistant of Alfonso Caso during excavation and register works in archaeological sites in Quiotepec, Tecomavaca, Los Cues, and Cuicatlán, Oaxaca. In 1959 was named director of the Museum of Popular Arts at Pátzcuaro, Michoacán. Around 1960 Pareyon was exploring and mapping archaeological sites in the low basin of the Balsas River, at El Infiernillo Dam. In 1961-62 he conducted the reconstruction of the Tenayuca pyramid superposition 6, and was exploring Huejotla, Texcoco archaeological site. In 1964 the INAH assigns him the whole reconstruction of Santa Cecilia Acatitla ruins, Estado de México. In 1970 he was named Chief of Archaeological Sites Maintenance of INAH. During the same year he moved to Palenque, with the task of developing the studies on the unknown surroundings of the site. In 1972 he conducted consolidation works at Tulum ruins, and in 1973 he developed the project for the Archaeological Museum of Tlapacoya, Estado de México. During 1975 was in charge of developing excavations and reconstructive tasks in Calixtlahuaca, and later in Tepetlaoztoc (1978), and in Ex-Convent of Churubusco (1980–81). Achievements His most important contributions to Mexican archaeology were the recovering of the ruins of Santa Cecilia Acatitlan and the studies about the yacatas structures in the