Step inside Washington's own Gothic cathedral Despite being built entirely during the 20th century (1907-1990), the techniques used to construct the Washington National Cathedral were the same as those used on the centuries-old Gothic churches in Europe. What powered the larger tools and cranes was different, but otherwise, the processes, ordering, and artistic finishing were almost entirely medieval. The last time a building of this magnitude was built using these techniques, cameras did not exist. Images of America: Building Washington National Cathedral divides the 20th century into decades to detail what must be the first published beginning-to-completion photographic record of the construction of a Gothic cathedral.