Cologne Cathedral is a Roman Catholic cathedral in Cologne, Germany. Construction of Cologne Cathedral began in 1248 and was halted in 1473, leaving it unfinished. Work restarted in the 19th century and was completed, to the original plan, in 1880. The cathedral is the largest Gothic church in Northern Europe and has the second-tallest spires. It was built to house the reliquary of the Three Kings and fit its role as a place of worship for the Holy Roman Emperor.