In 2008, a German and Peruvian archaeological team, headed by Peter Fuchs, announced that a circular plaza, 10–12 meters (11–13 yd) in diameter and constructed of rocks and rectangular adobe bricks had been found at Sechin Bajo.

Sechin Bajo may contend with sites of the Norte Chico/Caral–Supe civilization, most notably the Sacred City of Caral-Supe as the oldest urban settlement of the Americas.

[4] The Peruvian Pacific coast is one of the driest deserts in the world with average annual precipitation of less than 10 millimetres (0.39 in).

[8] Sechin Bajo is located about 130 kilometres (81 mi) north of the Norte Chico civilization, believed to be the oldest in the Americas.

The "First Edifice" or "First Building" is the oldest, initially consisting of a platform 16 metres (52 ft) square built of rocks and adobe brick and raised 2 meters over sunken circular plazas.

[12] The husband and wife archaeological team of the Pozorskis have speculated that Sechin Bajo and other Casma/Sechin cities and ceremonial centers were conquered about 1000 BCE by invaders from the highlands.

The purported invaders introduced maize, domesticated animals, warlike carvings, and different styles of ceramics and architecture.

That distinction in the early 21st century is held by the Norte Chico civilization of which the oldest ruins are dated at about 3500 BCE at Huaricanga, 130 kilometres (81 mi) south of Sechin Bajo.

[14] Another relevant ancient site is Bandurria, Peru in the River Huaura valley, with radio-carbon dates of 3200 BC.