I visited the Basilique Saint-Nazaire-et-Celse for one hour late in the afternoon of May 15th. The weather was surprisingly brisk and overcast, and the Romance portions of the nave were dimly lit by the light coming through the small windows. However, the apse and transept admitted considerably more light through the much larger windows in the northern Gothic style.
The northern Gothic style windows are the first to catch your attention as you approach the basilica from the side.
A small plaque reminds us that St Dominic, founder of the Dominican Brothers (monks), delivered a sermon in this church during Lent in 1213.
Throughout the basilica one finds statues of saints and banks of candles. Typically one can purchase and light a prayer candle for 2 euros, which then helps to support the upkeep of the basilica and its programmes. In the middle ages people would have stood for the entire service. Much later, seating was provided, eventually with kneeling benches for prayer (helping to keep clothing clean by not pressing onto the stone floor).
Mass is celebrated once weekly (Sunday evening), quite possibly to a relatively small congregation. Consequently, much of the basilica is wide open (freed of benches and chairs), allowing pilgrims and tourists freedom to wander and enjoy the open spaces as they please.
Here we are looking eastward, along the south wall. The opening for the window (barely seen on the right) is essentially tapered, allowing light to disperse from the relatively narrow window. The column is in the earlier Romance style of medieval southern France.
Now the opening for the window is more evident, recalling the slits favoured for castle defense. If you click to enlarge the photo, you can see the individual stones (carved like bricks) which make up the rounded vault for the ceiling. Some churches would have covered this with plaster and paintings, but these days we prefer to see the structure itself, which is authentic, rather than recreated paintings, for the earlier paintings disappeared centuries ago.
This view of the same aisle window also gives a glimpse of the Baroque organ which was built on/into the back wall of the nave. Unfortunately, I was not able to hear this organ, but the sound must surely be magnificent in this resonant enclosure.
Below, we are in the southern aisle (in the older Romance style), looking toward the back of the basilica. This photo illistrates that this style of architecture admitted rather little light compared with the newer style seen in the front of the basilica.
Now we are standing at the back of the basilica, in line with the south columns supporting the nave, looking toward the front of the basilica which is newer and in the Gothic style. In part, this style of architecture sought to open up the solid stone walls in order to admit as much light as possible. When this photo was taken, people were seated, listening to a Russian male quintet sing music from the wonderful Russian Orthodox 19th-century repertoire. The quintet apparently had permission to sing a song about every 20 minutes, and then invite people to consider purchasing their CDs. The sound was unbelievably live, "present", full and inviting. This was so much better than hearing a recording of sacred music.
We are of course asked not to ascend the red marble steps leading to the altar, but we were otherwise granted access to all of the public areas of the basilica. Since very few electric lights were lit, the basilica's lighting was more natural, the way it would have been for many centuries. Some of the electric lights that were turned on cast a garish orange-yellow light which seemed out of place.
Here we see part of the gigantic rose window (at the front of the apse) and the very tall, newer windows of the apse and northern transept. Even the inner columns were kept quite slender--possibly too much so. If you look carefully, you can see sturdy metal rods helping to keep some of these columns from bowing unduly as they bear the tremendous weight.
The following photo is obviously somewhat distorted, being taken by my 16mm wide angle lens. I wanted to see if the lens could capture just a bit of the grandeur of the enclosed spaces created by the columns, ribbed vaults, and transparent wall. Again, tourists give us a sense of perspective concerning the height of the columns.
A 50mm lens gives a more normal perspective, informative but not nearly as dramatic.
Under some of the Gothic windows in the northern transept (looking toward the east wall), we see one of several altars, possibly considered small chapels. When monks maintained this building as a cathedral, they would have celebrated Mass not only at the high altar daily but also at each of the smaller altars. These votive Masses would have been requested by benefactors, sometimes in perpetuity (which was obviously not perpetual, for times and circumstances change).
My favourite lighting in any church is that cast by the candles. So many people accept the unspoken invitation to pause, contribute, and light a candle while meditating or praying ever so briefly. It is an ancient custom that still speaks to the modern mind.