Although it is likely that Arabs settled in the vicinity around the 14th century, the first documented settlement dates back to the 17th and 18th centuries, when nobles and some clergy established estates in the area. In its history, the region was a small agglomeration of inhabitants, living along the Rio da Costa (whose spring flowed from the Casal do Castelo), and serviced by a small dock (
Porto da Paiã) that allowed the transport of goods to and from Lisbon (and permitted a nascent economy). The
Quinta da Pontinha existed, at least, since 1657. This farm estate changed proprietors (and names) during several centuries: at the beginning of the 18th century, it was known as
Quinta dos Brasileiros (owing to its wealthy owners originating from Brazil), and after various new occupants, in 1796, it was known as
Quinta dos Valadares. The Pontinha barracks were also the location from which Major
Otelo Saraiva de Carvalho directed the
coup d'état during the events of the revolution. The garrison was later transformed into a museum, established through a protocol between the 1st Engineering Regiment and the
Comissão Instaladora do Município de Odivelas. The barracks serve nowadays as HQ of
GNR's special operations group, GIOE. An administrative division of the municipality of Odivelas since 1984, under Law No. 44/84, approved on 30 November 1984 and published on 31 December 1984, it was de-annexed from the parish of Odivelas. Quickly, the parish was elevated to the status of
vila or
town under Law No. 75/91 (16 August 1991) and approved on 16 June 1991. ==Geography==