The Church of St. Jacob was first mentioned in 1155 as chapel under the administration of the Cathedral of Constance. The combined bell tower and choir was probably build in the 13th or 14th century. In 1465 the nave was extended toward the west and the tower was raised. The sacristy was added in 1489, bringing the church to its current appearance. In the same year it was raised to a parish church and the center of a local parish.
The baptismal font was added in 1590. The pulpit was built in 1790. The sundial was painted in 1808 by Conrad Boltshauser and restored in 1954. During a renovation in 1975, two frescos were discovered. The Weihnachtsgeschichte or Christmas Story was painted in the 15th century, while the Last Judgement is from around 1460-70. The church is shared between the Reformed and Roman Catholic residents.
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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.