Arched openings punctuate the contemporary entrance of Angers Cathedral in France , recently completed by the studio of Japanese architect Kengo Kuma . Opened earlier this month, the concrete entrance doubles as a gallery to frame and protect the sculptural doorway on the west side of the Angevin Gothic-style cathedral. Kengo Kuma has added an arched entrance to Angers Cathedral The rectangular form is broken by five arches, framing views of the historic sculptures in the doorway. Externally, the arches are wrapped by archivolts – a series of ornamental bands. According to Kengo Kuma and Associates , the 21-metre-long structure aims to create "a harmonious dialogue" with the architecture of the medieval building, which was constructed between the 12th and 13th centuries. The entrance doubles as a gallery However, the extension has proven controversial, with French newspaper Ouest-France describing it as a "concrete UFO" .…