The museum exhibits part of the material legacy of the region’s Olmec culture. It opened as a community museum in 1986 and was designated the site museum of San Lorenzo Tenochtitlan in May 1995. A number of monumental Olmec heads have come from this site and are displayed in the Xalapa Anthropology Museum as well as in the National Museum of Anthropology. The museum has three galleries, two of which are enclosed and one is open. The collection of 87 pieces, all from the archeological site of San Lorenzo Tenochtitlan, includes anthropomorphic and zoomorphic sculptures such as figures of a jaguar, architectural elements, ancient drains and an altar. There are also photographs and copies of other Olmec heads. There are three Olmec stone sculptures on display in the gardens and the most recently discovered colossal head. Generally the objects date to the Preclassic or Formative period around 1200 BC.