The Castro de S. Lourenço in the district of Esposende is part of a series of hill forts which controlled the region’s coastal shipping route. The site gives a great panoramic view and control over both the coastal area and the estuary of the Cávado river. The coastal plane is very narrow here and the hill fort is on the last western slopes before the plane. The prehistoric settlement played an important role in both trade and administration. It was in use from the Late Bronze Age up until the 5th century AD. In the Roman Era the architecture/ urbanism of the Castro de S.
Already for a long period of time, the Naturhistorische Gesellschaft Nürnberg e.V. (NHG), has been active in the region of the municipality Roth with many excavations showing the continuous habitation of the region since Neolithic times. Fritz Loy was active in the NHG and initiated in 1991 the building of a Hallstatt period type dwelling based on a nearby find in Untermainbach (now Schwabach) in Mittelfranken. The original house used to be part of a village like setting.