Similarly one may ask, how long did it take to build the Basilica of the National shrine of the Immaculate Conception?
roughly 40 years
Subsequently, question is, when was the Immaculate Conception first taught? Dec. 8, 1854
Secondly, when was Immaculate Conception Church built?
Although its foundation stone was laid in 1920, this great shrine seems to have been conceived of as early as 1846, the year the Bishops of America declared the Blessed Virgin Mary the patroness of the United States under her title of the Immaculate Conception.
How old is the Basilica in Washington DC?
62 c. 1959
