The Doppelkirche Schwarzrheindorf was once part of a Benedictine nunnery located at Schwarzrheindorf, now part of Bonn. The 'double church' has an upper church dedicated to the Virgin Mary and a lower church dedicated to Pope Clement I.
The church was probably built as a private chapel for Arnold of Wied, provost of Limburg Cathedral, Cologne Cathedral and the Basilica of Saint Servatius in Maastricht. Adjacent to the church, archaeological finds indicate that the chapel was once part of a castle belonging to the Wied family. In 1151 the Doppelkirche in Schwarzrheindorf was dedicated in the presence of King Conrad III of Germany. In the same year Arnold became archbishop of Cologne, a powerful position in that time.
After Arnold's death in 1156 his sister Hadwig of Wied turned the buildings into a monastery for Benedictine nuns. Hadwig was already abbess of Gerresheim and Essen Abbey and she now also became head of the Schwarzrheindorf congregation. Two of her sisters joined as well. Later, the monastery became a stift, a collegial body for female canons of noble origin. The upper gallery of the Doppelkirche was accessible only to the noble members of the religious community, where they were able to attend Holy Mass, separated from the commoners in the church below. In 1803 the stift was dissolved and the church was used for secular purposes until in 1868 it became a parish church.
The Doppelkirche Schwarzrheindorf is a well-preserved example of a double church from the High Middle Ages. The church has recently been plastered white but it is believed that this is what it looked like in the 12th century. It was originally conceived as a Zentralbau (central structure without a nave), following the example of the Palatine Chapel in Aachen. The church has a tall crossing tower and a dwarf gallery that not only encircles the entire apse but also both transepts. The dwarf gallery is accessible via an external staircase. The Romanesque capitals of the gallery are closely related to the carved capitals seen at the Basilica of Saint Servatius in Maastricht, where Arnold of Wied had initiated an extensive building campaign during his provostship.
The 12th-century frescos are largely original. In 1863 they were rediscovered underneath a layer of white plaster that had covered them for several decades. Both the painted upper chapel and the lower chapel are of great art historical significance. The subject matter for the frescos was derived from the teachings of contemporary theologians like Rupert of Deutz and Otto of Freising. In the upper chapel Arnold and Hadwig of Wied are painted below a Majestas Domini, stretching out on the floor as a token of humility.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.