I was amazed at the variety of experiences in the churches along the CF. Sometimes the simplest building would overwhelm me with emotion, while the grand cathedrals in Burgos and Leon were architecturally stunning but often left me feeling cold, and sometimes sad at the excess (WWJD?). I seemed to find more spiritual "juice" in some of the smaller, unassuming chapels. (I often wondered if this had more to do with my state of mind/heart than the buildings themselves...)
One church definitely stands out. In Hontanas on the Thursday before Easter, I popped into the Iglesia de la Concepcion Inmaculada (just before Castrojeriz on the CF), just to have a look. The church building was nice enough but fairly unremarkable, in fact the altar was undergoing renovation and had painted plywood facades of its former/future glory. But the vibe inside that church was ethereal. I was immediately drawn to a corner in the back where a big sand tray with candles was set up, surrounded by cushions on the floor and bibles in 7 or 8 different languages. Never seen anything like that in a Catholic church -- so much more inviting than the hard regimented wooden pews. I immediately dug into my pocket for coins, lit some candles and then sank onto the cushions ... sat there the longest time soaking up the lovely vibe ... finally got to meditate (which seemed impossible in the hostels). At one point, a kind priest gently interrupted and asked if he could give me a cross on a cord that had been blessed for Holy Week... he quietly placed it around my neck. It was such a kind and unexpected gesture, I was just overwhelmed & could not stop the flood of tears that came up.
It turned out the 12:30 Mass was about to begin, and unlike most churches in Spain, this one had Mass pamphlets in several languages so non-Spanish speakers could follow along. As a lapsed Catholic, I have my "issues" with the sometimes boring tedium of the Mass, but this time the ancient familiar words seemed to go directly into my heart. This priest, in particular, had such a warm presence and his recitation of the Mass was more soulful than most. I went to several more Masses along the Camino, but none of them touched my heart the way that Mass in that church did. I would not normally choose to wear a cross, but I wore that one for the rest of my journey and most definitely felt blessed every step of the way.
I believe some places have a much stronger spiritual energy than others. And I suspect this is also true of people.