5 /5 Juan Luis Gutierrez: Reaching a milestone in my pilgrimage to visit every Catholic church in San Diego County, I stepped into the awe-inspiring San Diego Cathedral, with stained glass windows that shimmer like stories come to life. Sunlight streamed through the magnificent stained glass windows of San Diego Cathedral. The soaring architecture and warm light filtering through the stained glass created a truly welcoming atmosphere. Free parking on Sundays in the nearby pay lot is an added bonus, making San Diego Cathedral a must-visit for any explorer of the citys religious heritage.