For its excellent location by the sea and as the arms of the lagoon reached the hill, according to the Outeiro da Assenta Lower Paleolithic station these lands were always populated. Here was formed a Celtiberian castro, facing west.
It is known that the Phoenicians traded here, and today more properly the Romans settled and it is likely that the southern Torch tower has had its origin in a lookout Roman tower construction, such as advanced post in the city of Eburobrittium , large urban metropolis found in an archaeological work phase.
On January 11, 1148, Portuguese first king, Afonso Henriques, supported by Gonçalo Mendes da Maia, took Obidos from the Arabs, after the previous November siege. The Cruise of Memory is a simple monument of the time, later restored. Obidos belonged to the defensive pentagon (the five castles), the center of the kingdom, created by the Templars.
D. Dinis gave Óbidos as a wedding gift to his wife Isabel and the village was owned by the House of Queens, only abolished in 1834. Most of Portugal Queens passed by the village leaving great benefits. D. Catarina orders to build the aqueduct and fountains. Administrative reform of King Manuel I gave Óbidos in 1513 a new Foral and this time a very intense urban re qualification.
The 1755 earthquake was felt intensely by knocking down parts of the wall as well as some temples and buildings and even changed some aspects of the stroke,the Arab and medieval hull. Óbidos was also a stage for the struggles of the Peninsular War and here toke place the great battle of Roliça.
More recently the Village hosted the preparatory meeting of the 25th April Revolution thus connected to the brave and heroic captains movement.