Planning for the Cathedral Basilica in St. Louis Missouri USA began in the 1870s and official work began in 1908. A dedication ceremony was held in 1914 but the final construction was not complete until 1923. The mosaics were begun in 1912 and were not finished until 1988, There are 41.5 million glass tesserae pieces in more than 7,000 colors used in the Mosaics and depicts Biblical scenes from both the Old Testament and New Testament. This cathedral has the largest mosaics collection in the world.
The lighting inside the Cathedral is so dim because they only have indirect lights in a few locations and the light from the few windows in the domes and high up in the side walls. Because of this it is nearly impossible to take a good digital photo using any settings except for manual.
Nikon D40X with Sigma 10X20 ultra wide angle lens on Manual mode Shot with the camera laying on the arm of the phew. Time delay 30 sec ~ 19mm focal ~ length, f5.7 ~ ISO 800