Night view of Cologne Cathedral in Germany

People walk on the Hohenzollern Bridge above Rhine River while the Cologne Cathedral is in sight in Cologne, Germany, Jan. 4, 2019. Construction of Cologne Cathedral began in 1248 and was eventually completed in 1880. The total area of the Cathedral measures almost 8,000 square meters and was declared a World Heritage Site by UNESCO in 1996. (Xinhua/Lu Yang)