Le Trépied is a prehistoric passage grave built during the Neolithic period (4000 to 2500 BC). It is a single chamber tomb, 5.5 metres in length and two metres at its widest point with three capstones, one of which was returned to its original position in the 1870s after it had fallen off.
Excavations in 1840 discovered pottery and flint arrowheads dating to 1800BC showing that the site was still in use then. The tomb was repeatedly mentioned in the 17th century witch trials as a meeting place for witches and as the venue for the sabbats. One story says that the witches used to perform chants mocking the Virgin Mary whose shrine of Notre Dame de Lihou once stood on the nearby island which can be seen from the headland where the tomb stands.References:
Roman Walls of Lugo are an exceptional architectural, archaeological and constructive legacy of Roman engineering, dating from the 3rd and 4th centuries AD. The Walls are built of internal and external stone facings of slate with some granite, with a core filling of a conglomerate of slate slabs and worked stone pieces from Roman buildings, interlocked with lime mortar.
Their total length of 2117 m in the shape of an oblong rectangle occupies an area of 1.68 ha. Their height varies between 8 and 10 m, with a width of 4.2 m, reaching 7 m in some specific points. The walls still contain 85 external towers, 10 gates (five of which are original and five that were opened in modern times), four staircases and two ramps providing access to the walkway along the top of the walls, one of which is internal and the other external. Each tower contained access stairs leading from the intervallum to the wall walk of town wall, of which a total of 21 have been discovered to date.
The defences of Lugo are the most complete and best preserved example of Roman military architecture in the Western Roman Empire.
Despite the renovation work carried out, the walls conserve their original layout and the construction features associated with their defensive purpose, with walls, battlements, towers, fortifications, both modern and original gates and stairways, and a moat.
Since they were built, the walls have defined the layout and growth of the city, which was declared a Historical-Artistic Ensemble in 1973, forming a part of it and becoming an emblematic structure that can be freely accessed to walk along. The local inhabitants and visitors alike have used them as an area for enjoyment and as a part of urban life for centuries.
The fortifications were added to UNESCO"s World Heritage List in late 2000 and are a popular tourist attraction.