"Cologne Cathedral, located in Cologne, Germany. A Gothic masterpiece and one of the largest cathedrals in Europe. Construction began in 1248 and continued for 632 years, with the final touches completed in 1880. The cathedral’s architectural style is predominantly Gothic, characterized by pointed arches, ribbed vaults, and flying buttresses, reflecting the medieval craftsmanship and design principles of the time. The cathedral houses numerous religious artifacts and is a UNESCO World Heritage Site"