Castros in Portugal
A castro is a fortified settlement, usually pre-Roman, associated with the Celtic culture. These are frequently found in Portugal, usually in the North, but can also be found elsewhere. The word castro comes from the Latin castrum, which means "hill fort". The first Castros where just small residences with rudimentary stone walls.
Northwestern Castro Network
The Northwestern Castro Network, was established in 2015 grouping the most important sites in Northern Portugal as founding members out of 2,000 archaeological sites:- Boticas ;
- Esposende ;
- Monção ;
- Paços de Ferreira ;
- Penafiel ;
- Póvoa de Varzim ;
- Santo Tirso ;
- Trofa ;
- Vila do Conde ;
- the Sociedade Martins Sarmento, from Guimarães ;
- the Direcção Regional de Cultura, managing Citânia de Santa Lúzia in Viana do Castelo.